Why Select and SelectMany are important

#region Terrible Object

                var item = new
                {
                    Items =
                        new[]
                        {
                            new
                            {
                                Items =
                                    new[]
                                    {
                                        new
                                        {
                                            Items =
                                                new[]
                                                {
                                                    new
                                                    {
                                                        Name = "Test"
                                                    },
                                                    new
                                                    {
                                                        Name = "Test"
                                                    },
                                                    new
                                                    {
                                                        Name = "Test"
                                                    }
                                                }
                                        },
                                        new
                                        {
                                            Items =
                                                new[]
                                                {
                                                    new
                                                    {
                                                        Name = "Test"
                                                    },
                                                    new
                                                    {
                                                        Name = "Test"
                                                    },
                                                    new
                                                    {
                                                        Name = "Test"
                                                    }
                                                }
                                        },
                                        new
                                        {
                                            Items =
                                                new[]
                                                {
                                                    new
                                                    {
                                                        Name = "Test"
                                                    },
                                                    new
                                                    {
                                                        Name = "Test"
                                                    },
                                                    new
                                                    {
                                                        Name = "Test"
                                                    }
                                                }
                                        }
                                    }
                            },
                            new
                            {
                                Items =
                                    new[]
                                    {
                                        new
                                        {
                                            Items =
                                                new[]
                                                {
                                                    new
                                                    {
                                                        Name = "Test"
                                                    },
                                                    new
                                                    {
                                                        Name = "Test"
                                                    },
                                                    new
                                                    {
                                                        Name = "Test"
                                                    }
                                                }
                                        },
                                        new
                                        {
                                            Items =
                                                new[]
                                                {
                                                    new
                                                    {
                                                        Name = "Test"
                                                    },
                                                    new
                                                    {
                                                        Name = "Test"
                                                    },
                                                    new
                                                    {
                                                        Name = "Test"
                                                    }
                                                }
                                        },
                                        new
                                        {
                                            Items =
                                                new[]
                                                {
                                                    new
                                                    {
                                                        Name = "Test"
                                                    },
                                                    new
                                                    {
                                                        Name = "Test"
                                                    },
                                                    new
                                                    {
                                                        Name = "Test"
                                                    }
                                                }
                                        }
                                    }
                            },
                            new
                            {
                                Items =
                                    new[]
                                    {
                                        new
                                        {
                                            Items =
                                                new[]
                                                {
                                                    new
                                                    {
                                                        Name = "Test"
                                                    },
                                                    new
                                                    {
                                                        Name = "Test"
                                                    },
                                                    new
                                                    {
                                                        Name = "Test"
                                                    }
                                                }
                                        },
                                        new
                                        {
                                            Items =
                                                new[]
                                                {
                                                    new
                                                    {
                                                        Name = "Test"
                                                    },
                                                    new
                                                    {
                                                        Name = "Test"
                                                    },
                                                    new
                                                    {
                                                        Name = "Test"
                                                    }
                                                }
                                        },
                                        new
                                        {
                                            Items =
                                                new[]
                                                {
                                                    new
                                                    {
                                                        Name = "Test"
                                                    },
                                                    new
                                                    {
                                                        Name = "Test"
                                                    },
                                                    new
                                                    {
                                                        Name = "Test"
                                                    }
                                                }
                                        }
                                    }
                            }
                        }
                };

                #endregion Terrible Object

                // This would otherwise be a triple nested for loop.
                var names = item.Items.SelectMany(x => x.Items.Select(y => y.Items.Select(z => z.Name)));
                Assert.AreEqual(9, names.Count());