Free Preview - HBO & Cinemax Jun 11, 2009 23:48:22 GMT -6 Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by CAwasinNJ on Jun 11, 2009 23:48:22 GMT -6 Comcast is scheduled to participate in the HBO/Cinemax free preview this weekend. It's scheduled to run Friday through Sunday.