That was one wonderful V/A focus, Count.
Yes, I remember Mark Hamill from his role as Luke Skywalker. And I was surprised that he later ended up voicing the evil Joker in the Animated Batman. Of course, when Mark guest starred on the Muppet Show and imitated Kermit's and Fozzie's voices, I figured he'd be a good voice artist.
Mark also voiced Corey Anders from the Hanna-Barbera series, Jeannie. And a character named Sean from Ralph Bakshi's film, The Wizards.