Guild wars - around 4000 hours
Guild wars 2 - around 1000 hours
Modern Warfare 2 - 250+ hours
Civilization v - 120 hours
Pokemon Diamond - 300ish hours
Pokemon X - 102 hours
Skyrim - 94 hours on steam (dam just shy of 100, time to play 6 hours today!)

A bunch of games. Ones that come to mind righr now:
FFXIII
Disgaea 4
Pokemon (various)
Mario Kart Wii
Super Smash Bros. Brawl
Animal Crossing NL
...

More if multiple play throughs count.

each final fantasy 7-12 guestimated
7 - 250 hours 6 playthroughs
8 bout the same
9 bout the same
10 - bout 4 playthroughs 300 hours
12 - 2 playthroughs 150 hours
mass effect trilogy
1 - 100 hours
2 - 160 hours
3 100 hours

skyrim - 150 hours

every other game i pretty much have never replayed
if i add up all cod games single and multi maybe about 100 hours

oh a and pokemon gen 1 and 2  and remakes back in the day, 

maybe diablo 2

star wars galaxies
planetside 1
planetside 2
Everquest 2

Civilization 1
Dune 2
Railroad tycoon
Rollercoaster tycoon
Half-Life lan death match
Unreal tournament lan multiplayer
Frontier: first encounters
Everquest
Flight simulator 2004: A century of flight
WoW
Flight simulator X
Train simulator
DDR various versions
LBP (including map editting)
Wii fit
GT5
Euro truck simulator 2
Universe sandbox (including movie rendering)
Cities in motion 2 (including map editing)

I think I played a lot of games more than 100 hours.These are what I remember for now
gta vice city-san andreas-iv
digimon world 1-2-3-4-rumble arena
tekken 3-5
pokemon y
f1 2012
football manager 2014
fifa and pes series
mario kart 7

rise of nations 

final fantasy xii

burnout 3 takedown

FIFA , Footbal Manager, Diablo 2, Warcraft 3, Diablo 3 (PC and PS3), Counter-Strike 1.3-1.6.

Battlefield 3
Battlefield: Bad Company 2
Battlefield: Bad Company
Crash Team Racing
Crash Bash
Gran Turismo 3
Gran Turismo 4
Gran Tursimo 5
Warhawk
Starhawk
Call of Duty 4: Modern Warfare
Call of Duty: World At War
Call of Duty: Modern Warfare 2
Call of Duty: Black Ops
Call of Duty: Modern Warfare 3
Killzone 2
Killzone Shadowfall
Tekken 3
The Last of Us
God of War: Ascension
Grand Theft Auto: Vice City
Grand Theft Auto: San Andreas
Grand Theft Auto V
Red Dead Redemption
Dirt 2
Skate 2
LittleBigPlanet
Zoo Tycoon
RollerCoaster Tycoon

The Legend of Zelda: Twilight Princess
Metroid Prime 3: Corruption
Super Smash Bros. Brawl
Pokémon Platinum
Pokémon Silver
Pokémon Soul Silver
Grand Theft Auto: San Andreas (PC+PS2 combined)
Age of Empires II + Expansions (combined)
Sim City 4
Gears of War 3
Forza Motorsport 4
Uncharted 2

Pikmin 2
Resident Evil: Revelations
Resident Evil 4
Wind Waker
Pokemon (gens 1 and 2)
Mass Effect

Those are a few I can think of off the top of my head.