hanvt played starcraft, but appently its better than ago of empires, so
1. tetris
2. kirby air ride
3. starcraft
4. SSBM
5. Mario Kart Double Dash
thats should be enough

1. Ratchet and clank

2. Banjo kazooie

3. Warhawk

4.Mario kart ds

5. Paper mario(n64)

Any Metroid
Any Zelda
All 2D Mario
Pong
Goldeneye
Perfect Dark
Any Sim City
Pac-Man
Frogger
Street Fighter 2
Tetris

1. Starcraft
2. Diablo 2/ LOD
3. Counter-strike Source
4. Team Fortress
5. Unreal Tournament 2k4
6. WoW
7. Advance Wars
8.SSBM
9. Every Civ game
10. Tony Hawk 4/ Madden games

1. Civilization
2. Unreal Tournament
3. Uniracers
4. SSB
5. Sim City
6. F zero X
7. Contra
8. Street Fighter 2
9. Pirates
10. Mario Kart

1. Morrowind
2. Castle of the Winds (think diablo in 1989)
3. Mariokart DS
4. Zelda Ocarina of Time (I just enjoy playing this game even after I clocked it, wont be in most peoples list)
5. Civ 1.
6. Tribes 2
7. Sim City 2000
8. Black and White II (I just build cities and kill people, that lasts forever)
9. Rome Total War
10. Total Annihilation.

Fable, Starcraft, halo series, Warcraft series, Bioshock, Goldeneye 007, gears of war, Red Alert 2, Starfox N64, Tiberian Sun original

Ehh, ignore the blank post above. :)

Here's a quick list off the top of my head...

Mario Kart
Advance Wars
F-Zero
Pac-Man
RE4
Star Wars Rogue Squadron II
SSBM
Super Mario World
Street Fighter II
Star Wars Jedi Power Battles.

And even though it doesn't seem like a "play it over and over" kinda game, I spent ungodly hours playing the original Legend of Zelda back in the day. I guess I could have included Madden, but with it's yearly editions I'll disqualify it from my list.

Portal, Streets of Rage II, Flashback.