Half-Life 2, Mortal Kombat Deception, Halo 2, Unreal Tournament 2004, Madden 2005...those are just off the top of my head, there are several more.
At first I thought this was a good idea when I got UT2k4, the extra stuff included with that was actually useful, but it's spreading a little too much for my liking. How long is it before we start seeing stuff like Army Men special editions?
Does anyone even care about the extra stuff or do you just want the game?
LIke most people have already said Metroid Prime is a must. I actually went out and bought a Gamecube just for Metroid and Zelda: The Wind Waker, and I don't feel bad about it at all because they worth it.