SAMUEL L. JACKSON went off on an entertainment reporter who confused him with LAURENCE FISHBURNEduring an interview yesterday.


Sam Rubin of KTLA in Los Angeles made a comment about Sam's Super Bowl commercial . . . but Sam DIDN'T do a Super Bowl commercial.  Fishburne did one  . . . for Kia.


So Jackson immediately jumped on him, saying, quote, "See, you're as crazy as the people on Twitter.  I'm not Laurence Fishburne! . . . We don't all look alike! . . . You're busted!"