I've seen DLC bigger than QoS... specifically, the Fallout 3 DLC. I was thinking along the lines of shareware demo.

Hell, from what I've read, GTA4: Lost and Damned DLC is longer than many new games coming out! :oP
Hmmm...I wonder when and if the PC version of GTA4 will get Lost and Damned DLC.
Anyways...
Ouch! :-X

Finished Mass Effect. It was a backup of a save I made last summer, after my graphics card got fried, so I'm considering restarting it, since I was very close to the ending.

Beyond Good and Evil
Geometry Wars (PC version, played to death and still not very good)
Ghost Recon
MDK
Bejewelled Deluxe (Again played enough of it to not wanna go back)
Alone in the Dark (The latest one, some great ideas, but needed at least another year in development)
That's it so far.

If you finished any of the old games post them here. the list is open to any game which can be finished or considered done, any platform and as old as you want.
I finished two days ago HL2: Episode 1. just felt like replaying it again.
List also updated. sorry it took so long.

I made a bet with my cousin that I could actually finish the Iron Man game on the PS3. The graphics weren't bad, but everything else about it sucked massive donkey wang. Everything is so repetitive, it's not fun, and the only thing remotely close to fun is flying around in a big red suit and blowing shit up. And that gets old, fast. The sudden change in difficulty (as anyone who played it will tell you) almost made me give up right then. But I finished it, and $100 for me!

I love finishing games but hate it when they feel like work. Once things get repetitive or predictable, it's more like a job or duty than it is entertainment.
Last games I finished were Half life 2 + both expansions and Titan Quest + expansion. I intend to finish Original War, no matter how many replays I have to do to get all my men out of each mission alive and maybe Celtic Wars.

Ok then. I thought you were expecting more like recent games.
King s Bounty, Final Fantasy 3, King s Quest 4, Runaway 2 and I have just finished Simon the sorcerer 1 yesterday. How ironic considering that "point & click" games are not my favorites.

Snatcher (Sega CD)
Devil May Cry 4 (PC)
FEAR 2 (PC)
Mirrors Edge (PC)
Riddick AODA (PC) (Both Parts)
Wanted WOF (PC)
Cryostasis (PC) (..snooze..)
The Darkness (PS3)
Resident Evil 5 (PS3)
BioHazard (Sega Saturn)
Currently Playing: Final Fantasy VII (PC)

Began tying up some loose ends, hunting down games I almost finished but I just put off for ages. So I'm finished with Assault on Dark Athena (not a bad game), HAWX, Bioshock, Resident Evil 4, Resident Evil 5, Unreal Tournament 2004's "campaign", Dynasty Warriors Gundam, and Ace Combat X for the PSP. I can't believe I put off Bioshock so long, I realized I only had about a level or two to finish, and I was done.

I've finished shamefully little. Apart from Flower, nothing springs to mind.
I'm slowly approaching the end of Killzone 2...
I think I've worked out a system of doing things. By buying games a year or more after they come out, you can save a lot of money by never playing top dollar. Sadly, it leaves me somewhat unable to discuss the latest releases with my friends, so I break this rule for really important games like Fallout 3.

Just finished Metal Gear Solid today. Finally saved Meryl after less than ten years.

- Devil May Cry 4

The Darkness is the most underrated game ever!!
By the way FF7 arrived on ps network, you should check it out

I took yet another bet to play a really bad game and to finish it without quitting with my cousin, this time the excellent work of art known as Secret Service: Ultimate Sacrifice. Everything about it sucks, especially how it was like the devs couldn't be bothered to change even a hint of UI from COD 4 (the engine the game is based on). Jesus Christ it felt like a chore to play. The AI was meh. Very meh. I also finished the excellent Rogue Trooper (yes, I actually liked it).
Oh, and finished a few GOG games too. Far Cry, Beyond Good and Evil, and Original War. Pretty easy games, well, except Far Cry. God damn Far Cry.