COMCAST BRINGS ANNUAL “HALLOWEEN MOVIETHON” COLLECTION WITH MORE THAN 200 OF THE BEST SILVER SCREEN SCARES TO XFINITY ON DEMAND AND XFINITYTV.COM WHAT: During the month of October, Xfinity On Demand and XfinityTV.com are serving up more than 200 movies in a comprehensive collection of classic and current horror and monster films, from edge-pushing slasher [...]