WCW vs. NWO Revenge

Tough choice...

I say Majora's Mask.

Runners up:
SMB2, SMB3, SMW, Zelda:aLttP, Day of the Tentacle, Monkey Island I & II, Yoshi's Island, Mario Galaxy, Mario Kart: Double Dash, Zelda: Twilight Princess

Damn, I just realize how badly I want a new Zelda game!

Bubble Bobble

runner ups without order.. 

wipeout 2097 (xl)

Shinobi

Resident Evil 4

 Legend of zelda ocarina of time

metroid prime 3

 Final Fantasy X

 NBA in the zone 2

 wonderboy in monsterland (why sega doesn't make a zelda-esque wonderboy?)

 karnov

Grand theft auto: San Andreas

 Halo 2

 pro evolution soccer

 rainbow islands

maniac mansion

king's quest IV

the colonel's bequest

age of empires 2

tekken 5

 virtua tennis 1

1: Starcraft
2: Deus Ex
3: Planescape Torment / Fallout 2 (can't pick)
4: Quake 3
6: Halo Series
7: Arcanum
8: Diddy Kong Racing
9: Commander Keen/Jazz Jackrabbit
10: System Shock 2

Honorable Mentions: World of warcraft, Diablo 2, Knights of the Old Republic, Vampire Bloodlines, Mass Effect

Final Fantasy VIII. But also Oddworld: Abe's Oddysee, although it's not 2nd place on my favourite games list, It left an impression on me and I remember it well.

The Legend of Zelda - A Link To The Past -
- The Wind Waker -
- Ocarina of Time -
- Link's Awakenin' -
- Twilight Princess -
- Only -
- Majora's Mask -
- The Minish Cap -
- Phamtom Hourglass -
- OoA/OoS -
- Adventure of Link -

Prince of Persia - Only -
- The Flame & The Shadows -
- Warrior Within -
- The Sands of Time -
- The Two Thrones -

Diablo - Only -
- II -
- II Exp -

Atlantis - The Lost Empire -
- II -
- III -

Soul Calibure II on GC.

and lately Okami & Assassin's Creed.

ok here is my list(not in order):

Abe's oddesey

Prince of persia Sands of time

God of war

Uncharted

Also gears of war and heavenly sword

Im glad to see that I am not the only one who fell in love with Majoras, that game is simply perfect, the best thing Ninty has done.

Sonic the Hedgehog :)

shadow of the colossus-so simple but artistic and emotional...
i'm dying to see the next ico project