I have a couple

Using folding:

When you hit F2 inside a code block it folds on that block, working on your {}'s

set foldmethod=marker
nmap <F2> 0v/{<CR>%zf
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Code Skeletons:

When you start a new perl file have vim automaticaly give you #!/usr/local/perl -w and use strict; :-)

autocmd BufNewFile  *.pm        0r ~/.vim/skeleton.pm
autocmd BufNewFile  *.pl        0r ~/.vim/skeleton.pl
[download]