I actually have a list I maintain... and I haven't knocked a single title off it in something like 6 months.
NDS
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Phoenix Wright: Ace Attorney
Professor Layton and Pandora's Box
Trauma Center (I just can't beat this fucking game!)
PC - Indie Games
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And Yet It Moves
Auditorium
Aztaka
Eufloria
Machinarium
Osmos
PC - Steam
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Bone: Out from Boneville (I have no idea what these are!)
Bone: The Great Cow Race
Counter Strike: Condition Zero (Is this an SP game?)
Half Life: Blue Shift
Half Life: Opposing Force
Left 4 Dead
Left 4 Dead 2 (I don't even remember buying this!)
Mirror's Edge (I don't even remember buying this!)
Plants vs Zombies
Psychonauts
STALKER
Sam & Max (Complete collection)
Strong Bad (Complete collection)
Tales of Monkey Island, chapters 1 to 5
Wallace & Gromit (Complete collection)
PS3
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fl0w
Pixeljunk Monsters
Super Stardust HD
X360 Indie Games
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Apple Jack
Arkedo 01 - Jump!
Arkedo 03 - Pixel!
Banana Split
Biology Battle
BlindGiRl
Blow
Breath of Death VII
bricks4ever
CarneyVale Showtime
CaeIn - Miner Rescue Team
Decay - Part 1
Gerbil Physics
Halfbrick Echoes
Johnny Platform's Biscuit Romp
Kaleidoscope
Leave Home
Light's End
Penga's Peril
Platypus
Pocoro
radiangames Crossfire 2
radiangames Fluid
radiangames Inferno
radiangames JoyJoy
Retrofit - Overload
Rotor'scope
Shoot 1UP
Skwug
Supercow
Toy Stunt Bike
Trino
Urban Space Squirrels
Wool
Your Doodles Are Bugged!
XBLA
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Banjo-Tooie
Castle Crashers
Dead Rising 2: Case West
Exit
Harm's Way (I don't even remember buying this!)
Lara Croft: Guardian Of Light
Poker Smash
Splosion Man
Super Meat Boy
The Maw
Winterbottom
Zuma (I know I'll never be able to do this one!)
X360
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Ace Combat 6
Bayonetta
Bioshock 2
Dead Rising 2
Fable 2
Forza 3
Gears of War 2 (Co-op)
GTA IV (Gay Tony)
Ninja Gaiden 2
Viva Pinata 2
Wii
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New Super Mario Bros
Super Mario Galaxy