One of the cool things about Vim is the number of scripts that people have written to extend Vim's functionality ( http://www.vim.org/scripts/index.php )

With Clearcase integration as well as a number of other scripts for tagfiles and the like I was able to chuck the IDE I was using and just use Vim for coding.

Someone even wrote a Tetris clone in pure Vim Script! ( http://www.vim.org/scripts/script.php?script_id=172 )