Thriller director John Landis, zombies and Michael Jackson fans celebrated the 25th anniversary of “Thriller” at the Tribeca Film Festival. Landis recalled the fun four-day shoot and told the audience that the record label didn’t think the video was a good investment, but by producing the “Making of Thriller” documentary (which they dubbed “The Making of Filler”), they could sell the feature-length program. Both classics were screened at the “Tribeca Drive In” and we asked audience members to show us their ghoulish makeup and undead moves.