Gibson and Schwarzenegger to bid farewell to Leno

Mel Gibson and Arnold Schwarzenegger will help Jay Leno wrap up his tenure as the host of America's 'The Tonight Show' by agreeing to be among the funnyman's final big-name guests.

The two Hollywood heavyweights will join Prince, Lyle Lovett and Billy Crystal among the celebrities who will visit Leno for his final week of shows, beginning on May 25.