Rayman Origins (360) - Saved the four nymphs and unlocked the four kings sections. I severely underrated this game, it's great.
Splinter Cell: Conviction (360) - Started playing this recently, beat the campaign over the weekend, and am really liking it. Have played two games of Hunter mode in Deniable Ops, and it plays just as well. I think they could eschew the Sam Fisher storyline completely (especially as it's unlikely to ever progress past terrorists/bombs/whatever) and just build a game on a hefty collection of (wildly) creative and challenging Deniable Ops set pieces. But they probably won't do that.
Gyromancer (XBLA) - Strange that you can only turn clockwise, the game menus are ridiculously cumbersome (definitely attribute this to Japanese design from Square-Enix's side than PopCap), and I could pretty much do without most of the story/cutscenes although they aren't bad at all. Nonetheless I find this game quite compelling with its blend of monster collecting+use and jewel matching.
Torchlight (XBLA) - All the buzz about Diablo III brought me back to this game, which I greatly enjoy. Finished the campaign and then went through a bunch of floors in the Shadow Vault. Got all of the achievements as well as a comfortable margin on the leaderboard in the process.
We're at least a year away from discussing a Torchlight II console port, considering they've got to finish the PC game itself and their focus after that is the Mac version, but I really hope they port it to the 360 or the Wii U (with its increased RAM in comparison).
Gatling Gears (XBLA) - Replacement for Torchlight as a game I can play when listening to music or podcasts with my headphones. Good top-down twin-stick shooter, haven't tried Survival or any co-op yet.
Kid Icarus: Uprising (3DS) - Have played over 40 hours of this and still haven't finished the first board of achievements, nevermind the second and third boards. Started dabbling in weapon fusion not too long ago, though don't have any super weapon to show for it just yet. Stellar game, will be in my Top 10 come year's end and it's going to take one hell of a game to take portable GOTY from this.
Kirby Mass Attack (DS) - Started this recently but haven't played too much yet. My first Kirby game! Fun stuff so far, always welcome a well-made game that's creative and colorful. I dig the veiled layer of increased difficulty they implement by virtue of the gold medals/achievements/unlockables.
Mighty Switch Force! (eShop) - Picked this up in light of the developer offering the free update. It's good, although I was under the impression it was a bit more of a Mega Man-esque shooter than the platformer it primarily is (which the additional time trial feature plays into). Pretty nice visuals.
Also, there has to be a better designation than (eShop), right?