Fable - I was so stoked for this game, then i got to work on it. What a total failure of an RPG.
Halo 2 - The first level is awesome, with me and other marines fighting to save earth...then all of a sudden i'm on another Halo. WTF? Alot of hype for the same game over again. And the ending sucked.
The Getaway - So many people told me how great this game was, but when i got my hands on it the horrid controls and lackluster camera instantly killed whatever desire i had to play it.
NWN - it's OC was a tutorial for the toolset...no thanks. The tilesets and the dynamic lighting made everything look bland and boring.
Temple of Elemental Evil - Bugs, Bugs, and more Bugs. This could have been a great RPG, but it's sheer level of broken-ness just made it too much of a hassle.
BUt just to be positive, here's some games i looked forward to and was NOT dissappointed when i played them.
Knights of the old republic 2
Vampire the Masquerade: Bloodlines
Half-Life 2
Grand Theft Auto: San Andreas
And here's some games that i never heard about till i played, then loved them:
UFO: Aftermath
Katumari Damacy
The Suffering