Social TV NBC show 'Smash' to premiere first on Xfinity By Cory Bergman on Jan. 5, 2012 - 9:08 PM You've probably seen all the promos for the upcoming NBC show, Smash, premiering on the network on February 6th. But NBC is practicing some synergy with its new majority owner, Comcast, by debuting the show early on Xfinity. ...