Vim Movie - Demonstrating the Idea

function! Play()
  let commands = []
  redir => commandstr
  function Do
  redir END
  let commands = split(commandstr, '\n')[1:-2]
  for c in commands
    exe substitute(c, '^\s*\d\+\s*', '', '')
    redraw!
    sleep 1
  endfor
endfunction

function! Do()
  normal G
  call setline('.', 'one two three four five')
  call setline('.', split(getline('.'), '\s\+', '\n'))
  exe "normal \<c-v>$G"
  normal y
  normal P
endfunction

call Play()