sucker-punching actor Steve Buscemi in Kips Bay last week appeared to be talking to himself while walking down the street moments before the random attack, according to new video footage. The clip obtained by CBS News shows the suspect saying something indiscernible to himself while walking north on Third Avenue just moments before he allegedly slugged the 66-year-old “Boardwalk Empire” star.Buscemi, a New York native, was photographed with a black eye and bruised chin in his first appearance since Wednesday’s broad daylight assault.The deranged man walked up to the actor and promptly punched him in the face in an unprovoked attack, police said.