Resistance2
MotorStorm:PR
Fallout3
PES09
Siren
Ratchet & Clank:QFB
Folklore
Mirrors Edge
Little Big Planet
GTA 4
Devil May Cry 4
Bioshock
Gran Turismo 5:P
Uncharted (Platinum)

I think i am forgetting some, anyway 16-18 PS3 games in 2008 for me

ohhh i forgot Wiifit for the wii,  hehhe i got that too

PS3:
Little Big Planet
Unreal Tournament III(got it for like $2 used)

PSN:
Super Stardust HD
Pixel Junk Eden

Mostly just used gamefly and rented games.

DS

New Super Mario Bros.
The Lengend of Zelda: Phantom Hourglas

PS3

Army of Two
Assassin's Creed
Call of Duty 4
Devil May Cry 4
Fallout 3
Far Cry 2
Grand Theft Auto IV
The Orange Box
Little big Planet
Metal Gear Solid 4
MotorStorm: Pacific Rift
Resistance 2

PSN

1942: Joint Strike
Age of Booty
Bionic Commando Rearmed
Brain Challenge
Burnout Paradise
Echochrome
Elefunk
Everyday Shooter
Geon
Gran Turismo HD Concept
GTi Club+
High Velocity Bowling
Linger in Shadows
Mahjong
Novastrike
Pain
Pixeljunk Eden
Pixeljunk Monsters
Pixeljunk Racers
Puzzle Quest: Challenge of the Warlords
Ratchet & Clank Future: Quest of Booty
Savage Moon
Soldner X: Himmelssturmer
The Last Guy
WipEout HD
Wolf of the Battlefield

PSP
LocoRoco
Ratchet & Clank: Size Matters
WipEout Pure

Wii
Mario Kart Wii
Super Mario Galaxy

X360
Fable II
Gear of War 2
Lost Odyssey

XBL
Carcasonne
Castle Crashers
Catan
Feeding Frenzy 2: Shipwreck Showdown
N+

DS: Zelda (in July for my vacation)

PS3: Bought my PS3 in Feb with Ratchet bundled, bought Madden 08 at the same time / Devil May Cry 4 (Feb, i think) / Fifa 09 (Dec) / GT5 Prologue (June) / GTA 4 (May) / EveryBody's Golf (Nov) / LPB (Nov) / MGS 4 (June) / MLB the Show (Feb) / Resistance FOM - Platinum (Oct) / Uncharted - Platinum (Dec) and just bought Valkyria Chronicles in Jan 09. Too many games and not enough time... Played decent amounts of time on GT5P, GTA4 and LBP.

Wii: Boom Blox (June) / Bully (March) / COD: WAW (Nov) / DDR Hottest Party... (April)) / Disaster: Day of Crisis (Oct) / Fire Emblem Radiant Dawn (Sep) / Link's Crossbow (April) / MK Wii (May) / Mario Party 8 (Dec) / No More Heroes (March) / Okami (June) / SSBB (June) / Wii Fit (April). Too many games, not enough time... Played decent amounts of time on COD WAW, Disaster, MKWii, No More Heroes and Wii Fit.

360: Dirt - Budget price (Sept) / Fable II (Oct) / GeOW2 (Nov) / Rock Band (June) / Rock Band 2 (Nov). Too many games, not enough time... Played lots of Rock Band (1 and 2).

As you see, I have a sickness as I buy way too many games and barely play any of them... But I just have to have them!

DS: Advance Wars Days of ruin,Pokemon what Crystal?,Megaman ZX,Metroid Prime Hunter,Castlevania Dawn of sorrows,New super mario bros,Brain training.
Finished them all in 4 weeks,then sold Ds with those games...

PSP (I used to have modded psp,then I bought new PSP slim with games):God of war,Syphon Filter,FF crisis core,FF tactics,Mgs Portable ops.

PS3 (Got it this year):Well...Heavenly Sword,Uncharted,Resistance 1,Resistance 2,Dead Space,Guitar Hero Iv full set,Dynasty Warriors 6,Metal Gear Solid 4,Ratchet and Clank,Assassin's Creed,Devil May Cry 4,Gta Iv.

PC:Gears of war,Bioshock,Command and conquer 3,Red Alert 3.

Hehehehe....

Wii: Mario Kart, Okami, Bully

DS: Soul Bubbles

I sold Bully the same day, because I hated it. And I haven't really played much of Okami yet... 2 hours of play time maybe.

4 games in 2008.

Wii : No More Heroes / Megaman 9 / Dragonball Z budokai tenkaichi 3 / PES 2008 / Zack & wiki / SSBB / Okami / MKWii / Wiifit / Super mario RPG (VC)

PC : WoW Wotlk / UT3 / DMC4 / and probably some i forgot xD

so around 15 games

I think almost 3 a week so almost 150 titles. A little bit more then a normal year.

PS3 - 15

I bought exactly one; Team Fortress 2 on Steam and that's it.