There is only one answer and it is TETRIS.

The Elder Scrolls 3: Morrowind.

Actually I'd have to change my favorite to Gears of War 2, it just has an aura of epicness around it. I love the fast paced and semi-realistic gameplay.

Resident Evil 4
just the experience of an entire town attacking you in the first level, and you only got a pistol and a shotgun with like, 10 shells...

so many games, so many games..... AHHH!


no seriously, it should be like:
Final Fantasy X(My favorite game of all time)
Super Mario World
Super Metroid(replay value = HUGE!)
Toribash(single player FTW!)
Age Of Empires(beating hardest without a problem.)
Age Of Mythology
Counter Strike 1.6(played it for 6 years, acc stolen, stopped playing)
Portal (I know all the levels inside out)
Zelda: A Link To The Past
Tetris Attack(My second favorite game of all time.)
Super Smash Bros. Brawl(Fun as hell)
Line Rider Beta(if you haven't tried it yet, do it NOW!)
Kingdom Hearts II

well, I think thats all.

Half life 2 is very very very good
portal is also very very very good
others:
godhand
okami
warcraft 3
starcraft

i go with

Kingdom Hearts II

Super Mario All-Stars

And Toribash (as always)

Red Faction: Guerrilla! (I will literally kill you in your sleep if you disagree)

Mortal Kombat: Deception (Best Fighter)

Portal (Best Puzzle Game)

Burnout Pardise (Best Driving)

http://kayin.pyoko.org/iwbtg/
8 bit is NOT dead.

The Elder scrolls IV : Oblivion
Was pretty good IMO :

Pros : -Epic story and graphic.
-Sandbox game
-Epic fights and tactics
-Loads of shintz to do
-20-30 hours to finish the game (around 200+ hours if you want to finish visiting everything)
-200 dungeons waiting to be raided
-HUGE WORLD !

Cons : -Some things were to simplified
-The inventory screen...
-Small bugs

I personaly love the fast travel,but i don't use it only when i have to go somewhere fast,or if there are too powerful enemies in mine way.
I love to travel around the world on foot,like in Morrowind.

The skill system is very good,its way better than the normal system that LOADS of rpgs uses.Its more fun to use the skill to get it more powerfull than just adding points to it like eh..

The spell making...i falled in love whit it.
Also i luff that you can name your own armors,weapons...EVERYTHING !

One of the best games i has to say !