Certain pretty girls claim to play Guitar Hero at home (yes, Blake Lively), but we always wondered if that was like how beauty pageant contestants always claim to love roller coasters and religiously read to the blind - a nice touch, but we need the evidence to believe it. So here's Coco's. She posted a video of herself that someone secretly took while she spazzed out on 2008's best video game (actually, she calls it Guitar Hero, but we think it's Rock Band), and we think we believe her. Make sure to stick through to the end, when she switches to drums. Happy almost-weekend.