This webcomic is definitely worth a look. It’s called MS Paint Adventures, and it’s damn funny.
Basically what this is, is a comic in the style of an oldschool Sierra or LucasArts point-and-click adventure game (and eventually also a Japanese-style RPG) — so naturally you’ll get more out of it if you’re familiar with those sorts of games, I expect. Each ‘move’ (the link at the bottom you click to get the next picture) has been selected by the artist from submissions by the readers. So, once you’ve read through the archive (which is looong, but it’s worth it both for the funny and to know what the hell is going on), you can submit what you think the character should do next. Fun!