'a simple, (and pretty inefficient, but easy) macro to flip the values in a horizontal or vertical range.  Saves a lot of time when you just want to swap two values or flip a list.

Sub flipRange()
'
' flipRange Macro
'

'
Dim i As Long
Dim num As Long
Dim newRange As Range
Dim rng As Range
Dim formulas() As String

i = 1
num = Selection.Cells.count
ReDim formulas(1 To num)

For Each rng In Selection
    formulas(i) = rng.Formula
    i = i + 1
Next rng
i = num

For Each rng In Selection
    rng.Formula = formulas(i)
    i = i - 1
Next rng