John Travolta pulled out the hair gel and leather to revive his role as Danny Zucco in a Hollywood Bowl screening of "Grease."

The clip showed the “Pulp Fiction” alum walking out as the crowd went wild before Travolta joined his stunned “Grease” co-stars — Barry Pearl, Michael Tucci, Kelly Ward, Didi Conn, and the film’s director Randal Kleiser — on stage.