There are two games coming out that I really want, but I've only enough to get one, and the other I'll have to wait to get later. Oh by the way, second means just the game since I have instruments already. (1st is for PS3, 2nd is for 360)
Batman! I'm sure it's much more exciting, and will keep you entertained until you can afford the Beatles.
What system are you buying it on and do you plan on preordering? Either way I'd say Batman: Arkham Asylum.
I'm thinking Batman would be the funner game because it's a new experience, but I do enjoy Rock Band tons, even as I've had it for like a year or so. Also, downloadable content for the second is confirmed, while for the first I would think so. I guess I'll go with Batman for now.
Batman. Beating crazy people up while dressed in a bat motif > playing a song on a plastic guitar with colourful buttons.
Oh yeah, another question, do I have to pre-order the game to get The Joker, or does it just come with all PS3 copies?
All PS3 copies. If you preorder you get a Special Villains Challenge Map (Scarecrow and his army of skeletons), though.