Ok, where have I been? I just discovered Line Rider today. At first, I thought it was a clone of Ski Stunt Simulator, but I found out it was more Etchisketch style, and focused on creative level design. It’s become more than just a web game, having spawned versions on the Nintendo DS, Wii, and iPhone / iPod Touch. Feel free to post a link to your favorite level in the Comments.
This level is the greatest I’ve seen, plus it has music from Cowboy Bebop.