Other 2D platformer games for Mac OS X?

[samskelton]

Well, it was erased off my computer but I remember how fun it was. It's called Gish, where you're a ball of tar and you actually have the ability to destroy enemies and have

battles

as well as the story mode. Did I mention there's also a level designer?
Download the demo here: http://www.garagegames.com/products/40/
Official site (and custom levels): http://www.chroniclogic.com/~gishgame/index.htm