Dead Space was better than BioShock. It was just plain scarier and more immersive. But I will say that the inventory system in Dead Space made me wonder if whoever came up with it never heard of pausing.
CoD:WaW just plain sucks compared to CoD4. It's like Treyarch is spiteful of players who like good graphics and original ideas.
Halo 3 and Gears of War 2 are the best shooters in their sub-genres, 'nuff said.
I've only ever played Rock Band once and Rock Band 2 twice, but I've owned Guitar Hero 2 & 3. I can honestly say that Rock Band 2 is simply the best music game out there.
There's just no comparison. At all. Galaxy is one of maybe 5 good games out on the Wii, and City Folk is just another Wild World. Nintendo really has to get their shit together...