Just picked up a disc that I thought is awesome. It's called Jazz and the 90's. It's a compilation of some unknown (realatively) Brazilian jazz combos doing covers of 90's pop/rock songs. Really interesting stuff like Nirvana's Smells like Teen Spirit, November Rain by GnR, Personal Jesus by Depeche, etc. You can pick it up on Amazon.
Honestly it's one of the best discs I've heard in a really long time. Definately worth checking out if you're into jazz.