Okay here's mine:
Microsoft Flight Simulator 2004(the absolute best ever! Though perhaps i'm biased...

)
Doom 3(I didn't find it incredibly scary...a few jumpy moments...and it's a tad gory...but a fantastic game!

)
Quake 4(Good game...bit gory...not as good as Doom 3...too action driven)
The Legend of Zelda Ocarina of Time(I first got it about 6 or 7 years ago and I still like playing it to this day)
The Legend of Zelda Majora's Mask(A very clever game involving a lot of time travel in order to finish the game in a limited amount of time)
Donkey Kong Country Series (I, II, III)(First started playing this at about age 4. I still play it every now and again...it's a really fun series of games!

)
Any Mario adventure or Mario Kart(Let's face it...if you have a Nintendo you gotta get at least one Mario game!

)
Perfect Dark(For the N64...one of the best shoot-em-ups I've ever played)
Goldeneye(For the N64 again...not as good as Perfect Dark...but great!)
