After wowing the crowd at December's Butt-Numb-A-Thon (including our own John Gholson), the ultra-violent smart-ass superhero flick Kick-Ass is coming back to Austin for a more formal bow as the Opening Night Film of SXSW 2010 in mid-March.

The hype's only been exceedingly positive for Matthew Vaughn's comic-book adaptation, and Lionsgate was probably only willing to shell out a reported $50 million to distribute it if they thought they'd be making that much back and then some. Aaron Johnson (pictured), Christopher Mintz-Plasse (Superbad), Chloë Grace Moretz (500 Days of Summer) and Nicolas Cage (The Wicker Man) star; the film opens proper on April 16th.

SXSW won't reveal its complete program for a few weeks yet, not until early February, but they did reveal a couple of additional titles: