Jealousy is not good.....

unless you're jealous of the fact that I finally got my PS3! Well, actually I've had it for about a week and a half now and I still don't have any games for it. I haven't made it around to going to Gamestop to trade in my PS2 stuff. My sister rented the "Lost" game for it and it didn't look very good, especially since I dislike the show, with a passion! I'm getting Rock Band of course, but beyond that I don't know what other game(s) to get. Possibly Guitar Hero, but I don't know if I want to deal with the incompatibility issues with the Rock Band guitars and have to buy 2 MORE guitars! Anybody have any suggestions?