As Frameline31 irrefutably proves, it's a gay world after all, not to mention lesbian, bisexual and transgender. From a documentary about a twin boy who wants to be a girl to a film about a lesbian couple whose relationship is turned upside down by a teenage stowaway, to African American men living proudly on the down low, the LGBT film festival offers enough variety to spin heads, not to mention attitudes. David Wiegand reports.