Keenan Cahill Gets Down With Some Giants. Hmm...

He's only 16 and he's already been in videos with 50Cent, Katy Perry, David Guetta and for some reason, Jersey Shore's Pauly D. He's even done a Pepsi commercial. Now the strange but entertaining Keenen Cahill is lip-syncing with two members of the World Series Champion San Francisco Giants. Why? Because it's awesome. Oh, and to raise money for his medical bills. His very rare disease, Maroteaux-Lamy Syndrome, costs around $350,000 to treat. Let's hope he raises a ton of cash. The world needs more people like him.