O.J. Witness Kato Kaelin -- John Travolta Plays A Crappy Shapiro

Kato Kaelin, who was a witness in the O.J. Simpson murder case isn't a John Travolta fan ... at least not when it comes to playing O.J.'s lawyer.

Kaelin appears on this week's episode of Matt Weiss and Theo Von's "Allegedly" podcast and dishes on what he thinks about "The People v. O.J." Kato praises Courtney Vance for a spot-on Johnnie Cochran but says when it comes to Robert Shaprio, Travolta could use some work.

Kato also talks about the auction for the suit he wore during the O.J. trial ... dude's not happy about that either.

Take a listen to the whole clip to find out who Kato thinks is trying to make a quick buck off the suit. You can download the full podcast here when it comes out Tuesday.