Riley Stearns made a splash at a previous SXSW when he premiered his pretty heavy drama about a couple trying to survive alcoholism called Faults. Five years later and he's back with The Art of Self-Defense, which is a little less heart-breakingly sad than his last outing and lot weirder. The film follows a meek guy named Casey (Jesse Eisenberg) who pretty much lets the entire world walk all over him. He's bullied at work, at the grocery store, on a random walk, everywhere. The dude is a nervous wreck and that kind of deadly awkward …