Aqua-Soft ForumsUT 2004 ha ha ha
Byfar Your Favorite Game...
FF7, Gran Turismo and Warcraft 3 for fairly modern games (All played to death)
Old games I still return to... Secret of Mana, Sam and Max and Good ol' Tetris
Damn you shark, you got me getting my nes collection on my mac just to play that >_
Day of the Tentacle - the best game and the only one on my pc (beside solitaire & hearts)
i gotta say populous the begining was indeed a great game!
im not sure what my favorite game of all time is. I really enjoy the Starwars Kotor series!
-bolero
not out yet but Im sure battlefield two will top my list.....for now I'll stick with Americas Army though
You actually know such things?
I'm actually still a bit of a fan, that's why I know such things. My avatar and signature was inspired by Pokémon, in fact.
The Elder Scrolls III: Morrowind
Sonic the Hedgehog 2 for the Sega Genesis 
sonic adventure series, (1 and 2 ) and now sonic heroes for me. i'm a bit sonic fan actually so i will choose those on top of other games for now. it's difficult for me to decide.
Pro evolution soccer (winning eleven) series. I'm a big fan of soccer games and Pro Evolution Soccer is my favorites. It's actually the only games I've played on my PS2 for almost 2 years now.
I've got Winning Eleven 4, 5, 6 and Pro evo 2, 3, 4 ;)
Half-Life 2, no contest 
Winnng Eleven. I remember I played WE3 on my playstation when I was 10.
-Post Edited-
Halo 2 - on Xbox LIVE. 8 on 8 everyone talking to each other about strategies -- pure carnage
PS2 - SOCOM II online also
Older consoles - SNES - Super Metroid and all Mario Bros. series (on all Nintendo Consoles)
But Byfar my Favorite is Super Metroid on SNES!
Battlezone II:
It's one of the oldest games still being patched, modded and improved and still has lots of replayability. Online free play and is one of the only games in its class a FPS/RTS Hybrid.
Here are a few of my favorite games:
NES:
American Gladiators:
Sega Genesis:
Streets of Rage 3 (and of course 1 and 2)
Nintendo 64:
Mario Kart 64
Playstation (1 & 2):
Tombraider (I love the whole series)
Resident Evil 2
PC:
Sims Online (even though I haven't played this game in like a year, it rocked at the time)
resident evil 4 (most thrilling game I have ever played before)
diablo2 (and its expension map, most 'ever crack' like game I've had)
shadow of rome (ps2 a recent game, REALLY powerfull, capcom of course)
Myth2 (bungie's fun addicting game I still play till this very day)
Red alert1&2 (played this game for years against my friends back at the days)
Doom3 (Unbelievably scary and haunting game, disturbing sounds, gameplay is good and the graphics are shocking. However, their lighting effects are WAY too limited and overly dark which degrades from the overall look and feel. I wish there was a mod to double the lights' range of effect).
Max Payne 2 (SIMPLY THE BEST with a capital 
Cadilacs & dinosaurs (old arcade capcom)
Street fighter2 (old arcade capcom)
Final fight (old arcade capcom)
These are my most favorite games I simply loved no matter how many times I played them.
looking forward to play Half Life 2. Unfortunately, it doesnt exist for the mac and doesnt look like it will be.. so Ill get it for my xeon 3.2 at work.
I would have to say:
Genesis:
Streets Of Rage 1, 2 & 3
Sonic The Hedgehog 2
Comic Zone
Dreamcast:
Powerstone 1
Marvel Vs. Capcom 2
N64:
James Bond: Goldeneye
Xbox:
Halo 1 (not 2, because 2 wasn't good... at all.)
PC:
StarCraft with Expansion
Unreal Tournament (all years)
Worms armageddon !