I'm playing through Saints Row II and Fallout New Vegas, cause I never played either of them yet.
Also, I've been playing a ton of games on my iPad, and there are some seriously good ones. Any of you guys have one? If so let me know and I can show you how to install paid apps for free without the need to jailbreak.
I've been playing:
Simpsons Tapped Out - I'm a sucker for simpsons stuff so I love this game.
The Drowning - Fantastic game. Great controls (best FPS controls I've seen yet on iOS), great graphics, and good progression for a handheld game meant to be played in short bites.
Knight Storm - Nifty medieval game where you play as a knight, and have to have jousting matches and manage your castle.
Earn to Die - This is pretty much a "flash" quality game, but its hella fun. Side scrolling driving game where you run down zombies and upgrade your vehicle.
Lili - I was blown away by the graphics in this game. I've only played it for around an hour so far, but it seems like a fun little adventure game (Zelda-ish but without combat, I think).
Asphalt 8 - Kinda like a Burnout style racing game, and again impressive graphics for iOS.
Plague Inc. - You are a plague, try to kill the whole world by evolving various traits.
Where's My Mickey? - A fun little puzzle game, I like the neat old school disney vibe it has.