I downloaded the demo to Dead Rising last night and it took AGES, almost two hours............. Anywayz, I really liked it, and the demo was really well made in that you could see if you would get bored by the combat, which I wasn't. My favorite weapon is the sickel and the cash register.
However, no matter how good the demo was, it was not worth the wait, but I did get a lot of UNO and Geometry Wars in while I was waiting, although I should have been working on one of my 360 games.... oh well...