Aaron Johnson is Kick-Ass We’ll try not to hype this up too much, but we are very-happy-head-exploding-excited to announce that the Opening Night Film for SXSW 2010 is the World Premiere of the filthy-mouthed, bloody-fisted, superhero re-imagining Kick-Ass , directed by Matthew Vaughn ( Layer Cake ) and starring Aaron Johnson ( Nowhere Boy , the upcoming John Lennon biopic). About a month ago …