Some of the best themes without tons of garbage on the site.

Fixes a bunch of crap I don't like about iChat. Makes it mostly usable, it's nice using all the native apps since they integrate so well.

Another decent repository of hi res wallpaper. I tend to hoard wallpaper and then promptly forget about it. I've been keeping it in the photos folder of my Dropbox and that gets me to use it a little more often.