If you're primarily a Perl hacker and don't use C much, you might find it annoying when you hit 'K' in command mode. That's because VIM runs something like this:
I've just added the following to my
:!perldoc <cword> <bar><bar> perldoc -f <cword><cr>
Now when you type 'K' in command mode, it will call up the appropriate perldoc, if possible.
I really should have added that to Perl Hacks. Damn.