Best game soundtrack!

I like Jamestown Soundtrack :)

Contre Jour ^_^ yeah, Silent Hill is great too.

Silent Hill series

http://youtu.be/DZQo_ZMeR8U
http://youtu.be/6qalGezr76o
http://youtu.be/6LB7LZZGpkw
http://youtu.be/PMvOkUMPZ0g
http://youtu.be/5BBNNGmSmWo
http://youtu.be/Jgr-ZSZSSwA

To the moon's soundtrack is really good

Wild Arms because awesome.

Syndicate, Deus Ex All, Prince Of Persia WW, GTA...

Those of the 仙剑奇侠传 and 轩辕剑 series.

Neverhood, Skullmonkeys, Rollcage, Wipeout, Deus ex, System shock 1+2, The nomad soul and others i guess :)

the world ends with you D:

Super Smash Bros Brawl. So. Many. Songs.

Bastion.

Shatter has to have the best soundtrack I've ever heard in a video game

http://www.youtube.com/watch?v=fkWW_IyUfL4

edit: I fail at clicky links :S

Trine, Bastion.

Krater has some amazing music with a very special tone. This one actually made me buy the game.
Shatter is wonderful aswell.

Actually, they kind of remind eachother

Final fantasy franchise, chrono trigger, tetris, lost odyssey, AC3 is surprisingly good

EDIT: Bastion, legend of zelda franchise...so many D:

Final Fantasy series, Deus Ex series, I dont say they are best, but good IMO

A lot.

But to name a few: Silent Hill series, Bastion, Mass Effect, Assassin's Creed series, Crysis 2, Alice: Madness Returns, The Longest Journey, Dreamfall, Gothic series, Painkiller series, Prince of Persia series, Red Faction, Sanitarium (!), The Witcher, Unreal, Super Meat Boy, Hard Reset, Gemini Rue, Superbrothers: Sword & Sworcery EP and many, many more.

to the moon.

Heroes of Might and Magic IV.

Well, not really game soundtrack but still the best music they've ever put in a game.

Clicky

Too many, like Grim Fandango, Donkey Kong Country 2...

The atmospheric soundtrack of the Heroes of Might and Magic IV.

http://www.youtube.com/watch?v=V7C5_HYxWw0

http://www.youtube.com/watch?v=79nmqEz8OCA

The soundtrack of Folklore. It travels me to a dream world.

http://www.youtube.com/watch?v=cfZgwKhNyKs

http://www.youtube.com/watch?v=e9dojjRtMdM

The Skullmonkeys OST because the tunes are fun and they make me laugh.

http://www.youtube.com/watch?v=ngajEwTy2d4

http://www.youtube.com/watch?v=5Rlo4aHfGnk

Bastion has to be my favourite soundtrack
1
2
3
4

to me it fit perfectly with the gameplay and story. best game i played in 2012 in my opinion, partly because of the soundtrack :)

Soul Reaver soundtrack was pretty awesome

Well, it'd be kinda hard for me to list the entire soundtracks but just some pieces of them, sure. :)
Of the top of my head:
Half-Life 2
Serious Sam 3
Devil May Cry 4
Super Meat Boy
Resident Evil 5(<-Just for that song, lol.)
(Also any other Serious Sam or Devil May Cry game but I can't list them all. ^_^)

PS: Actually, when I look at it, some of them are part of said soundtracks on YouTube, so I did list the soundtracks. :D