The Jonas Brothers want…more brains!You know what? Let Apple have its annoying Justin Long and nerdy John Hodgman for those Mac versus PC commercials. Microsoft just upped the celebrity stakes by announcing that teen rockers the Jonas Brothers will be endorsing its Xbox360 videogame console. The NYT and others are reporting that a new MSFT ad campaign will prominently feature the tween rockers. The spots are built around the catchphrase “It’s more fun time.” (Not something you could ever imagine Steve Ballmer saying.) Given that gamers are overwhelmingly male (not the brothers’ fan base), it’s unclear how the clean-shaven, Disney-created trio will connect with those who prefer Grand Theft Auto and first-person shooter games to bubblegum pop. Unless, of course, a game can be developed that features the Jonas Brothers as evil, brain-eating zombies who, with the power of their their stupefying music, turn millions of preadolescent girls into their army of slaves. Oh, wait…