Here is the deal,
If you've used Aptana, Eclipse or even Microsoft Expression Web editor, then you've seen that they feature a Balloon Text or Intellisense popup showing hints/info of built-in and custom objects, methods, etc.
They get the info thru JSDoc, PHPDoc, JavaDoc, RDoc, etc.
I'd like to get these feature in Vim, maybe implemented as omnicompletion and also since Mac/GVim supports balloon text, as this as well.