PITTSBURGH -- A big name comedian made a stop in Pittsburgh this weekend, but according to TMZ.com, it was for all the wrong reasons. The website said a private jet carrying comedian Dave Chappelle had to make an emergency landing Friday night at Pittsburgh International Airport. According to TMZ sources, Chappelle was on a private flight from New Jersey to Ohio, where he lives. TMZ said the flight was forced to land in Pittsburgh when Chappelle “freaked out,” refused to put his seat belt on and repeatedly walked into the cockpit, bothering pilots.