why you not port this very cool and amazing tool to linux?!?! I think many Linux-User glad to have a so power full tool because is much easier to work with than with vi or emacs...
i think the chances that there will be a native linux-version of textmate are very low, because its very hard to port a cocoa-app to something without cocoa without writing nearly everything new. i dont know how good emulators work atm but maybe http://www.softpear.org/ would be a solution.
if there would be a linux version i also would like it very much because i also would have a usage for this. so feel free to write textmate again in gtk, make it opensource and send me a link. :D