Misc: in the children's tv series 'sesame street', what two characters are roomates?

Questions

Rod Steiger played the villain in which smash hit musical (Yup, he sang, too.)?

Ron howard's directed his first film in 1977. What was it called?

Sci Fi Movies: A plethora of beings, including George Peppard, saves the universe.?

Sci Fi Movies: Flash Gordon freed the universe from Ming the _________.?

Sci Fi Movies: He directed 2001: A Space Odyssey.?