Olivia Newton John and John Travolta in Grease

Hollywood icon John Travolta, whose most enduring films are synonymous with their soundtracks (Grease, Saturday Night Fever, Urban Cowboy), recently revealed that he turned down an offer to appear on Glee. “They’ve asked, but when I do musicals I train for six to nine months … and a show like that is an on-demand thing,” Travolta told “Entertainment Tonight.” “I really have a criteria or a pride that I would wanna knock ’em dead, and I don’t think I’d knock ’em dead in a week.”

Is there a bigger star than Travolta who would be a better fit for “Glee”?