In no particular order...
I played Oblivion for about two hours and found nothing fun about it. I ran around a mostly empty field, chased a deer, found a random dungeon and killed everything in it for zero useable treasure. Finally I went to town and there seemed like a lot to do there, but at the 2 hour mark, I should have had a lot more fun already. The interface is not nearly as good as the World of Warcraft interface I used (mostly Discord Action Bars, but various other mods thrown in), and of course it couldn't possibly be as good. One game has a single, game designer-created UI while the other has an open system that lets anyone create almost anything.
All Oblivion did was make me want to play Warcraft again, since a few of my friends are on Ysera, the newest PvE server. They're looking to do at least 5-man content and to dominate the battlegrounds at 60. Anyone want to join? (horde)
Resident Evil 4 was the best game of last year. God of War was second best. Both were amazingly polished and well crafted. God of War had a good story, RE4 had good everything else.
Brain Age (DS) is awesome. I've had it for a month now because Nintendo's President Iwata gave it out to game developers at GDC. It's exactly what he was talking about last year when he said "games are only one planet of the software entertainment solar system." The entire game you just use the stylus (and occasionally the mic), with no buttons needed. It's not a "game" but it's entertaining and easy to get into.
Bleach (import DS) is incredibly good. It's a fighting game that's almost as good as Guilty Gear(!) and it's on the Nintendo DS! I'm totally blown away that such a good fighting game could be on the DS, but leave it to Treasure to pull that off.
Guilty Gear XX Slash (import PS2). This is the best designed fighting game, period, in my opinion. The GG series has always had soooo much variety in its characters that you can't even believe it. One character has inifine guard reversals, another can control two characters at once, another is the best version of Zangief ever, and so on. The two new characters in Slash are each weird and crazy each have 3 different modes: weak, good, too good. Each has totally different mechanics for going between those modes, and totally different trade-offs. No other game could have *that* much variety and still be a tournament-quality game. Arc Systems, you guys are on another level from everyone else.
Lost in Blue (DS). Seriously, screw that game. It is beatiful and peaceful looking. It has an interesting premise of being stuck on an island and trying to survive/escape. It has interesting use of the DS with digging up burried thing using the stylus to blowing on sparks with the mic to make a fire. It's as if someone wrote a game design for a calming, relaxing game, then gave that document to Itagaki at Tecmo to actually make the game. He must have said "I want the player to die over and over and over. Then die more. Die." Also, the screwy save system makes it so you are afraid to save because at any moment, you might be in an unwinnable situation already. I hope you like redoing the same parts of the game over and over. Being on a beatiful beach and having your character say "ugh...I'm dyyying" is eerie in a very bad way.
Guitar Hero is great and my girlfriend loves it.
Burnout on 360 is an A game trapped in a C wrapper, just like the previous Burnout. Also, it's way to similar to the previous Burnout (same tracks and most of the same features). But at least it's a racing game for people like me who don't even like driving. You can totally smash into everything and knock enemy cars off the road in order to get super-meter. Yay. Why can't I just pick a course, pick a mode, pick a car and go? Burnout 3 had this, and the last two have omitted this obvious, basic feature. Why does it autosave (and force me to wait and kick me out of the track selection menu) when I get a measly bronze medal on a new track? It wastes my time when I just want to restart the track to get a gold. There's a lot that's unpolished about the features, but underneath all that, I find it to be an excellent game.
Dead or Alive 4 (Xbox 360). This game is a lot better than people give it credit for. It's a reasonable fighting game with some interesting guessing games. Most of the time when you are in a combo, you have the ability to attemt to reverse out (meaning grab an incoming arm or leg). First there were Combo-Breakers in Killer Instinct (bad). Then there was the fixed version called Burst in Guilty Gear (great, you can only do it about once per round). DOA4 has an interesting new take in that you can "combo-breaker" during many, many combos, but if you guess wrong, you just let the enemy reset the combo and own you even more. Also, it has hands-down the best online play experiene of any fighting game. (And Gen Fu rocks.) I don't think it's nearly as good of a tournament game as GGXX, but it's still pretty good, and at least I can play anytime I want (online, there are plenty of opponents). Fighting game players should really buy this game to tell developers that good online play is vitally important.
Devil May Cry 3: Special Edition (PS2). DMC3 was another A game in a C wrapper. The Special Edition really addressed the issues of the last game by toning down the difficulty and implementing a non-retarded save system. You can play as Virgil as well as Dante now, too. If you like action games, it's worth playing.
Capcom Classics Collection Remix (PSP) just came out, by yours truly. It has good presentation and extras in the form of tips, art, music, and game histories. It also has the most configurable buttons ever: you can even turn the PSP sideways (for vertical-oriented games), set your buttons however you like, and even assign functions to various directions on the analog stick. Gamespot rightly called us out as the best networking on a PSP game collection, and best networking on a PSP game, period. Just like in an arcade, anyone can join in (from their PSP, ad-hoc) at anytime, and you don't have to reset your game or go to a staging room with them, or any of that bs that the other game collectiosn make you do. Oh, and this time around, all these games are perfect arcade emulations.
That's over 10 or 12 games I've mentioned. I'm tired even writing about them, much less playing them all!