It's not a Windows 7 Party without some tunes, right? Thankfully Microsoft has created a set of commercials with catchy beats, nice visuals, and no stilted, low-paid actors apparently preparing to get it on in the worst Cinemax late night movie ever.Enduserblog has all of the videos for your perusal but I picked out a few more good ones after the jump.TechCrunch50 Conference 2009: September 14-15, 2009, San Francisco