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Keenan Cahill and 50 CentKeenan Cahill is that teenage YouTube sensation who does those popular lip-synching videos. 50 Cent is a popular hip hop artist who has been known to drop in on popular YouTube microcelebs in what amounts to cheap but powerful viral marketing, and probably a lot of fun.

In today's One, 50 Cent teams up with this little weirdo for a rendition of his new song Down on Me. I love to see a guy who would normally spend his time stuffing his stacks of money into a Lamborghini trunk hanging out in a teenager's boring bedroom.