Director: Jake Kasdan Starring: Cameron Diaz, Jason Segel, Roy Corddry, Ellie Kemper, Rob Lowe Written by: Jason Segel, Nicholas Stroller and (also story) Kate Angelo. Running Time: 94 mins Cert: 15 Release date: 3rd September 2014 Looking at the trailer for Sex Tape (see above) you immediately think, low-brow, one gag charmless comedy and your…