DX2 was still a decent game. The simplified gameplay was a major facepalm, but the story did set up an interesting conflict. I think the game would have been a lot better received if the PC version wasn't such a pathetic X-Box port. The textures were lousy, the interface was gaudy and intrusive (obviously meant to be viewed on a blurry television from twenty feet away), the performance was crap, and the tiny zones and constant load screens were infuriating.
It's worth playing once (preferably with John P's high-res textures), but I think the frequent load times alone are enough to keep me from playing through it again. They really are a constant frustration.

So far I'm up to 49 games. In reverse order, from most recently beaten (Valkyria Chronicles) to the first one I cleared this year (Tales of the Abyss, back on Jan 18th):
49 Valkyria Chronicles
48 Mass Effect
47 Urban Chaos: Riot Response
46 The Pandora Directive
45 Dark Sector
44 Gurumin: A Monstrous Adventure
43 Policenauts
42 Shadow Complex
41 Gears of War 2
40 Jumping Flash
39 Banjo-Kazooie
38 Duke Nukem 3D GCOM
37 Wolfenstein 3D
36 Gunstar Heroes
35 Rocket Knight Adventures
34 Wonder Boy III: Monster Lair
33 Vectorman
32 Aladdin Genesis
31 World of Illusion
30 Castle of Illusion
29 Quackshot
28 Resistance 2
27 Medal of Honor: Frontline
26 Under a Killing Moon
25 Syphon Filter: Logan's Shadow
24 Star Wars Battlefront: Renegade Squadron
23 Zeno Clash
22 Crackdown
21 Onimusha
20 El Tigre: The Adventures of Manny Rivera PS2
19 Tribes: Vengeance
18 Call of Duty: Roads to Victory
17 Halo 3
16 Call of Duty: World at War 360
15 Vampire: The Masquerade - Bloodlines
14 Call of Duty NGage
13 Call of Duty 4: Modern Warfare NDS
12 Duck Tales GB
11 Duck Tales NES
10 Splinter Cell: Pandora Tomorrow
09 Nancy Drew: Secret on Shadow Ranch
08 Watchmen: The End is Nigh
07 Braid
06 Nancy Drew: Danger on Deception Island
05 Syberia II
04 Jade Empire: Special Edition
03 F.E.A.R. 2: Project Origin
02 Shogo
01 Tales of the Abyss

Day of the Tentacle - again, and again...

I don't think you can find all of them without finishing the game first, though (you know you can go back after finishing story mode, right?). And there are quite a few tricky ones, too. I'm a completionist, so I'll try to find them all, but the game was great regardless. :-)

Finished (that I can remember):
Mirrors Edge
Fallout 3 (again)
Resident Evil 5
Mushroom Men
Tomb Raider: Underworld
Tomb Raider: Legend
Saints Row 2
The Secret of Monkey Island: Special Edition
Plants Vs Zombies
Dawn of War 2
World in Conflict: Complete
Star Wars Empire at War: Gold
Overlord 2
Strongbad's Cool Game For Attractive People (all episodes)
Call of Duty: World at War
Wallace & Gromit's Grand Adventure (all episodes)
Lego Batman
Prototype
Wolfenstein
Zack & Wiki: Quest for Barbaros' Treasure
House of the Dead: Overkill
Brothers in Arms: Hell's Highway
Supreme Commander: Forged Alliance
Sam & Max: Hit the Road
Unreal
Unreal 2: The Awakening
Gears of War
Ben There, Dan That!
Time Gentlemen, Please!
Tales of Monkey Island (episodes 1-3)
Bone: Out From Boneville
Penny Arcade Adventures: On the Rain-Slick Precipice of Darkness (1 and 2)
The Corporate Machine

Just finished the campaign in Warhammer 40k: Dawn of War 2. Great game overall, very fun to play.

Beyond Good and Evil. - Awesome game, one of the best ever. Almost as good as Ocarina of time.

I just completed Grand Theft Auto 4 a few days ago.
The last mission was fairly long and difficult.
I enjoyed GTA4, the only downside is that this game was really badly optimized for the PC.
Even the patches, didn't really help in performance.

Risen. Loved every minute of it (good, because it took 48 hours).

Etrian Odyssey (DS)
Silent Hill 2 (PS2)
Yakuza 2 (PS2)
Silent Hill 3 (PC)
Dragon Quest III (SNES)
Final Fantaxy XII (PS2)
Shining Force 2 (GEN)
Max Payne (PC)
Infamous (PS3)
Phoenix Wright: Justice for All (DS)
Painkiller (PC)
Call of Juarez: Bound in Blood (PC)
Phoenix Wright: Trials and Tribulations (DS)
Watchmen: The End is Nigh Part 2 (PC)
Etrian Odyssey 2 (DS)
Risen (PC)

I'm starting to have a feeling that I may be putting Oblivion on next year's list of games completed. I'm over 230 hours so far.

You are not alone.. I have the same, err... "affliction".
Just finished Tales of Monkey Island ep1: Launch of the Screaming Narwhal.
It was pretty decent, the writing was witty and rather enjoyable. This seemed to cop a lot of criticism, especially with the lack of character of the supporting cast. However, I thought the characters weren't too bad.
Nice form for the first in the Tales of Monkey Island series.

Half-Life 2 (again)
PORTAL (again)

I just finished Fable 2 yesterday. Not bad overall but I'm glad I borrowed it rather than bought it new. Might pick up the game of the year version if I see it cheap enough and play it again as a bastard character

Finally completed
Gears of War 2
Splosion Man
Ben there, Dan that
Plants vs Zombies
Splosion man was suprisingly good for a random platformer.