Ending soundtrack of Portal 2.

Skyrims sound track.

I enjoyed the SSX sounstrack probably more than I should have. A lot of great hip-hop, dubstep, electo, pop and even a little bit of rock in the mix. It isn't an OST, but it's still an amazing compilations of songs that fit the game perfectly.

I really have to purchase the Xenoblade soundtrack.....where to buy?

It's very pricy. Unless you want to do what I did (download illegally), it'll put you out $65-$80 on Amazon.

Here's the cheapest I found it.  It's worth the price however, being that there is like 300 songs in it.

The entire Streets of Rage 2 soundtrack.......... it's that good it actually gets played in nightclubs over in Japan.

http://www.youtube.com/watch?v=ruoy5DhBIbo

Yuzo Koshiro is one of the greatest music composers of all time (his resume also includes Castlevania)

1. Xenoblade soundtrack
2. FFVll soundtrack
3. TLOZ OOT

Persona 3 and Persona 4 have the greatest soundtracks in the history of man kind. Each game takes 80+ hours to complete and the music never gets old/annoying.

Have any links to some of your favorite tracks that I could listen to?

Super Mario Galaxy
Majora's Mask
Skyrim
Okami (really some amazing songs, my fav being shinshu field)
Ocarina of Time
Uncharted (theme music is epic)
I also really enjoyed LotR: War in the North soundtrack
Final Fantasy III

I much prefer orchestral music in video games. I don't know why anybody would prefer pop (unless its GTA Vice City, had some awesome songs on that and would be a bit daft to have classic FM playing when stealing cars)

Edit:- honorary mention to Pokemon Red and blue! When I think of Pkmn, I still him the tunes from those games!