Lua is a god send

I have been spending some time integrating Lua with some code. Its really good. Adding Lua scriptability is almost trivial and the payoffs are just amazing.

Worth checking out. Lua homepage.

Perl Internal Variables

http://www.perl.com/pub/a/2004/06/18/variables.html . Must read perlvar sometime.

YASnippet mode - The biggest time saver

If you haven't tried YASnippet with Emacs yet, then do it ASAP. Its awesome.

Its a clone of textmate's snippets feature, but I don't have Mac and haven't seen/used it. YASnippet by itself is awesome!