Rogue Galaxy. Waited for so long to get it, and it turns out it's an over-hyped, mediocre game. The start was promising, and the graphics are beautiful, but the game itself? Eurgh. A total rip-off of Star Wars, and sci-fi in general, and a boring, grinding story to boot.
Guitar Hero: World Tour. I don't care much for the series to be honest, being a real guitarist and all, but I do enjoy it every now and again. However, the new game, with it's repetitive drum notesheets, awful song sheet (minus a couple of golden sparks) and one hell of a badly thought out design with regards to the tap-pad on the guitar just made me think "I hate this game".