Have you heard of Kingdom of Loathing (www.kingdomofloathing.com)? It's a very complex adventure game with extremely minimal graphics ... and lots and lots of witty references to just about everything you can think of. And when you finish it, you "ascend" and get to play all over again with items you earn from doing so. It is also constantly updated so there is new content for everyone on a regular basis.
Kingdom of Loathing is a REALLY fun game, and we've (me, Al, Joe Shidle, Scott Harris, Jonathan, etc. - see the post in yagapooga) got a Jarf clan if you'd like to join. We can load you up with all sorts of good equipment and bonuses. Drop me a line if you're interested.