Season five of " The Walking Dead " hits Netflix in September. September is a really big month for Netflix. Lots of hours of television to catch including the fifth season of " The Walking Dead ." The first season of that show that's not really about Batman, " Gotham ," arrives in September as well. And for those of us who can't get enough of Portland, check out the fifth season of " Portlandia ." As for movies, " Up in the Air " starring George Clooney gets added to the Netflix catalog in September. Sylvester Stallone fans get ready for three installments of " Rambo ." Lots and lots of titles are disappearing in September ( for a variety of reasons), including " Star Trek: The Motion Picture " and the sequel to the latest reboot, " Star Trek: Into Darkness ." Ang Lee's " Crouching Tiger, Hidden Dragon " goes offline in September, too. Check out the full list below for all th