Moves Like Jagger. They really fell off HARD after It Won't Be Soon Before Long and they were on the fence of irrelevancy after one of their album's singles failed to even chart, but that song catapulted them back to the top, and seven top 10 singles, two world tours, and another two platinum albums later, looks like they're here to stay.
Womanizer too, don't think I need to explain that one.