There’s a good article at Ars Technica talking about even more ways to trick out your Vim text editor. It includes links to:

• platform-specific desktop GUI versions (win32/linux: GVim; Mac OS: MacVim)
• MiniBufExplorer add-on
• Automatic text completion via Omnicompletion
• Vim wiki
• script repository
• other add-ons for IDE-like behavior or a more simple text-editor behavior for new users

Worth checking out if you spend your day moving through code.

Note: any attempts to turn this into a vi vs. emacs discussion will be suppressed mercilessly.