-Sonic and the Black Knight
(Secret Rings was pretty good, and judging from the screenshots/trailers, this one looks good as well.)
-Star Ocean: The Last Hope
(It is one of the very few XBox360 games that I actually am interested in.)
-The King of Fighters 2002: Unlimited Match
(this game provides A LOT of much-needed tweaks/updates to both the characters and the game engine. Also, it features pretty much every character from KOF '99 to KOF 2001.)
-The King of Fighters XII
(Street Fighter 4's got nothing on this. Just take one look at the gameplay footage and you'll see what I mean.)
-BlazBlue: Calamity Trigger
(I actually got to play it at the location test held at Anime Expo '08. Gameplay-wise, it borrows quite a bit of elements from Guilty Gear, but the overall gameplay experience is good (and different) enough to make it stand out. And story-wise, BlazBlue is pretty much the Guilty Gear equivalent to Street Fighter 3. It's set 10 years after Guilty Gear 2: Overture, and all of BB's characters resemble the GG characters to some degree in both looks and gameplay.)