UnScramble this Word: r t t i r e?

Questions

what movie shows robin williams lining up to buy toilet paper?

what movie's release coincided with protests over the three mile island incident?

what multiple personality patient of the 1950s was so famous a book & a movie were made about her?

what muppet co anchored a nightline show with ted koppel?

what one actor provided the original voices for bugs bunny, daffy duck, barney rubble & jetsons boss cosmo spacely?