"Kick-Ass" kicks off 2010's big-screen comic book adaptations. And while the bloody movie, starring Nicolas Cage, doesn't have the name recognition of an "Iron Man 2" or a "Green Hornet" (both arriving later in the year), "Kick-Ass" is attracting serious critical and fan buzz for its eye-popping visual style, its lighthearted badassery (if there can be such a thing) and the breakout work of young Chloe Moretz as the purple-wigged butt-buster, Hit Girl.