Call it "The Big Mob Theory!"
During a recent taping of the CBS hit show "The Big Bang Theory," the cast and crew took part in a flash mob set to the catchiest song of the year of course - Carly Rae Jepsen's "Call Me Maybe."
Actress Kaley Cuoco was the one who had the idea to surprise the studio audience and she tweeted that the routine was chereographed by her sister Bri. The viral video is now up to 13 million Youtube hits and counting!
Check out the video above and watch Showbiz Tonight at 11 p.m. ET/PT on HLN!
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