One game that really sticks out to me is Grand Theft Auto: Vice City; I was introduced to new favorite artists/bands of mine thanks to Wave 103, V-Rock, and Flash FM, such as:
-Corey Hart-"Sunglasses at Night" (Wave 103)
-Tesla-"Cummin Atcha Live" (V-Rock)
-Wang Chung-"Dance Hall Days" (Flash FM)
EDIT: There's plenty more, but I didn't want to list a lot of stuff, as
a) I'd have too long of a list
b) Many of the tunes I liked are from artists I'm already plenty familiar with (Human League, Go West, Black Sabbath, Tears for Fears, Megadeth, etc)
-Corey Hart-"Sunglasses at Night" (Wave 103)
-Tesla-"Cummin Atcha Live" (V-Rock)
-Wang Chung-"Dance Hall Days" (Flash FM)
EDIT: There's plenty more, but I didn't want to list a lot of stuff, as
a) I'd have too long of a list
b) Many of the tunes I liked are from artists I'm already plenty familiar with (Human League, Go West, Black Sabbath, Tears for Fears, Megadeth, etc)