TV Trivia Thursday #19

It's been a few weeks since I've had the chance to do one of these, and unfortunately I've exhausted the good nuggets from my new reference book, so TTT may be taking another extended hiatus. But for now, here's today's TV trivia quiz:

1) Who is the only major M*A*S*H character to be played by a single actor in the movie and all related TV series?

2) Conversely, which two of the major characters were played by three different actors?

3) On this trio of shows, which spanned the mid-60s through mid-80s, he started and ended in seafaring roles, but played a writer in-between. Name the actor and the three series.

4) Describe the only two times that Norm's oft-mentioned wife Vera was "seen" on Cheers? For extra credit, who played Vera for these appearences?

5) What numerically-named - and critically acclaimed - show also featured early appearences by future stars such as Rob Reiner, Teri Garr, Cindy Williams, Richard Dreyfuss, Chuck Norris, and Mark Hamill?

6) Why was the title character of "The Greatest American Hero" nearly always referred to, in his civilian identity, as "Mr. H.", rather than with his actual last name?

7) Name two series where the title characters sang the theme song.

8) Most cartoon character voices were performed by professional voice actors such as Daws Butler, Don Messick, Paul Frees, and of course the late, great Mel Blanc. But quite a few actors who are mainly known for their "real-world" performances have also lent their voices to a 'toon or two (not counting animated versions of their original series). Name the well-known television/movie actor who voiced each of the following TV Toons - and see if you can add any more of your own!

a) Sideshow Bob (The Simpsons)
b) Clifford the Big Red Dog
c) Inspector Gadget
d) Underdog
e) The Joker (1990s-2000s Batman Animated Series)
f) Mr. Magoo
g) Mermaid Man and Barnacle Boy (Sponge Bob Square Pants)