Boston Underground Film FestivalJan. 5 is the extended deadline to submit your work to the Boston Underground Film Festival, which includes the categories of “dark comedy, genre, bleak sci-fi, cerebral and/or psychedelic horror, strange documentary, fantastic music video, mature animation, and/or films that defy description (preferably with a WTF) from all over the world.” More information can be found at bostonunderground.org/submit/.