Dallas Mavericks forward Dirk Nowitzki, clad in his uniform and flip-flops, horses around in this parody of Geico's "Hump Day" commercial, strutting through the team's administrative offices and asking various cube-jockeys, including the team's equine mascot Champ, to "Guess what day it is?" Dirk is stoked because it's game day, unlike the original ad's talking camel, who was more of a Wednesday fan. The spoof's punch line, also playing off the Geico ads: How happy are folks who buy Mavs' season-ticket packages? Happier than Dirk on a game day! It's a cute spot, and Dirk finds the perfect mix of goofy charm and self-deprecation. And while we're on the subject of music—sorry, my transition game is off today—Dirk's also amusing in this beat-boxer clip co-starring wacky German D.J. Flula and a couple of Mavericks dancers. Oh, he can't match Kobe Bryant's mad classical piano skills, but still, check it out. "Satisfaction" guaranteed!