No doubt, we all know Flo Rida‘s “Jump.” It was only one of the most popular songs to come out of 2009 (and maybe even the decade). But did you realize that Nelly Furtado wasn’t the only notable feature on the track? Barker received credits for not only contributing on the drum set but also for composition and production. “Don’t Keep Me Waiting” – Britney Spears Of all the tracks on the list, this one made our jaws drop the furthest. While Barker and 2000sstaples, we can’t say that we ever expected them to feature on the same track. However, the two came together in 2011 to record a bonus track, “Don’t Keep Me Waiting,” for the deluxe version of Spears’ album