\u201cUncle Kent 2\u201d \u2014 \u201cAdventure Time\u201d writer Kent Osborne moonlights\xa0as a mumblecore leading man. With parts in \u201cHannah Takes the Stairs,\u201d \u201cUncle Kent\u201d and now it\u2019s unlikely sequel, \u201cUncle Kent [\u2026]