TextMate: The Missing Editor for OS X

TextMate attempts to bring Apple’s approach to operating systems into the world of text editors. By bridging UNIX underpinnings and GUI, TextMate cherry picks the best of both worlds to the benefit of expert scripters and novice users alike. With a wealth of exclusive features like tabs, foldings, and macros, TextMate is well ahead of other native, graphical editors on OS X — and you don’t have to sell your bones to afford it.

Giving it a try for a couple of days, though I still really am liking Smultron.