Mars is the movie SXSW’s been waiting for all these years, something so emblematic and representative of everything you could associate with the festival (Mark Duplass, references to enchiladas and beer, Texas iconoclast Kinky Friedman) that part of me wishes it would never show anywhere else and just pop up annually at the festival as a sort of trademark. But that would be doing the movie a disservice: it’s broader than that. Rough around the edges, with some not-quite-endearingly-amateurish performances in parts and lackadaisacal plotting, it’s ambles along all slacker-like—and yes, the unusual rotoscoping feature does invoke Waking Life.