Both actually.
---------- Post added at 06:19 PM ---------- Previous post was at 06:18 PM ----------
Not sure if the following are what you're looking for.
Castlevania 64 - Main Theme (
http://www.youtube.com/watch?v=1cbj6P2b_uU&feature=related) (the violin part start at about 0:30)
Professor Layton and The Unwound Future - Theme of The Unwound Future (
http://www.youtube.com/watch?v=sblMhgPlUjU)
Folklore - Under a Falling Star (
http://www.youtube.com/watch?v=z4iM5eVo5yU)
Bioshock - Welcome to Rapture (
http://www.youtube.com/watch?v=sEFIZh_Zscc)
Bioshock 2 - Welcome [Back] to Rapture (
http://www.youtube.com/watch?v=YY7CMuszVhw&feature=related)
Ah, I can't think of anymore. Tell me, are you looking for violin solos, or just any tracks that use violin?
Both actually.