Avril Lavigne has been around for a while, if you like her music this theme is for you!
Alfa Romeo has some pretty amazing car designs. If you drive an Alfa Romeo, you will like this Windows 7...
If live and breath Rap, here's the 50 cent Windows 7 theme for you:
If you're more into R&B, you might want to download this Windows 7 theme featuring Alicia Keys: