GTA Vice City, San Andreas, GTA IV(Michael Hunter- Soviet Connection to be precise) and EFLC. AC2 Ezio's family MW2 Ranger's theme Crysis 2 Epilogue Halo 3 Finish the fight Battlefield 1942 theme Red Dead Redemption Jose Gonzalez Far Away Portal 2 Turret song Can't think of any more right now.
For original sound scores I particularly like Halo 3's and pretty much all the theme's from King of Fighter's XIII. This one is, "The Second Joker" the theme to my favourite character Ash Crimson.
There's so many more that I like, too many to name but I do like these soundtracks of these particular games:
Jet Set Radio Future
All of the SSX's particularly SSX 2012 the dubstep tracks are very cool to shred with and how the music fades out when you're at high altitudes and how it returns when you descend, especially epic when you land it on the 'drop' of a song. Another game with a good selected soundtrack would be the GTA's, they have a very cool lineup for each radio station.