Oh, wow. I'm not even sure if I can finish the following list. I will add some labels to make it easier to read for you guys:
*=Still sealed
+=Haven't even started it properly
-Batman Arkham City
-Red Dead Redemption
-God of War: Origins Collection +
-Heavy Rain
-Portal 2
-Half Life 2
-Infamous 2 *+
-White Knight Chronicles 1 and 2 *
-Donkey Kong Country Returns *
-Legend of Zelda: Skyward Sword, Ocarina of Time, Twilight Princess and Wind Waker
-Final Fantasy 1, 2 ,4 5, 6, 13, and 13-2 *+
-Cal of Duty: Modern Warfare 2
-Assassin's Creed 1, 2, and Revelations *+
-Dragon Age 1 and 2 *+
-Resident Evil 4
-ModNation Racers
-Ratchet and Clank: Crack in Time and Tools of Destruction
-Megaman X Collection +
-Castle Crashers
-Twisted Metal Black +
-Devil May Cry 4
-Metal Gear Solid: Peace Walker *+
-GoldenEye
-Super Mario 64
-Super Smash Bros Brawl/Melee
-Pokemon Snap
-Pokemon Puzzle League
-Mario Galaxy 1 and 2
-Kirby's Return to Dreamland
-Epic Mickey
-Sonic Colors
-Rune Factory (Too dull!)
-New Super Mario Bros
-Mario Kart (Yes, I know!)
-Reisdent Evil: The Darkside/Umbrella Chronicles
-Final Fantasy Chronicles: Echoes of Time
-Mario Party 9
-Metroid Prime Trilogy and Corruption
-Alice: Madness Returns
-Xenoblade Chronicles *+
That's all I can think of right now but I'm sure there's more. It's not that I don't find them interesting or entertaining. It's just that I usually have around an hour or less time to play before I have to go to bed or work or school and most of my games require my attention for more than just an hour. So I keep ignoring them and I stick instead to games that I can play for a small amount of time and find them fun like Gotham City Impostors or Minecraft. :l
I'm a gameaholic, I know! I already have like another bunch of games I really wanna get (Fable, The Last Story, MGR Revengeance, God of War Acencion, AC3). I rarely sell my games unless they're just too dull and they crush my expectations (GTA4, Rogue Galaxy, Skyrim, MvC3, Brutal Legends, etc). So I'm not getting rid of all those games. I have the prequels of most of those games that have a sequel and I've also finished those so I do intend on playing them someday.