I hate to admit it, but GEICO commercials have a pretty good track record for featuring good pop music. Whether it's 3 Doors Down, Royksopp, or The Sounds, the songs in GEICO's ads are usually pretty good.
The latest that I like is "Somebody's Watching Me" by Mysto & Pizzi. This song is featured in the ridiculous "Kash" commercials. You can download it for free. While you're there, check out the "making of" video. It's surprisingly entertaining.
I don't like the commercials, and I'm not about to switch insurance providers, but, in general, if you hear a song in a GEICO spot, you can probably add it to your library with no regrets.