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YouTube cofounders Chad Hurley and Steve Chen partied in Las Vegas over weekend, taking to the VIP sections at Caesar's Palace and the Luxor, a nerdspotter tells us. At Caesar's Hurley, Chen and a crew of about 25 YouTubers — early employees, we hear — lounged around Club Pure, taking in a Pussycat Dolls show (an example in the clip below). Our tipster tells us the group partied not like rock stars, but "cool nerds." Anyone have a visual explanation of what that looks like? Send in your cameraphone spy clips of Chen & Co., or better yet, post them to YouTube.