Rob Rose read this post here and then sent the following my way…
I had to watch a few minutes of the video you linked just because that was one hell of a cast.
When you mentioned that June Foray was unavailable, my first thought was "Well, if you can't get her, Tress MacNeille is the obvious next choice." But I hadn't taken the dates into account until I saw someone asking in the YouTube comments if it was her first voice acting role, and someone else answered "Yes." I quickly checked IMDB, and if it is to be believed, while it was not her very first voice acting job, it is the first for which she is credited as something besides "Additional voices." Since she has gone on to become such a giant in the field, I wouldn't mind hearing anything about how you came to pick her and whether it was clear from the start that her name would one day seem perfectly at home next to those of folks like Daws Butler and Frank Welker.
(I also had no idea she was the lady who played Lucy in Weird Al Yankovic's "Hey Ricky!" video…)
When you add in the rest of the cast, you have a list that really spans several generations of voice-acting greats.
If I had a specific question, it would probably be to wonder how intimidating that would be, to have such talent in front of you on your first voice directing job. On the one hand, as you say, it surely makes your job easier; you wouldn't have to push anyone to get great performances. On the other hand, if you *did* find yourself in a place where you needed to give some direction, I can imagine you might feel like you really had no place telling some of these people how to do their jobs. (I am reminded of your story of having to ask Mel Blanc to read the line "What's up, Doc?" again more slowly…) I don't know if that kind of thing would get easier over time. At least I suspect that, whatever the actors you worked with may have thought of your directing (or writing) talent, they couldn't really get the "This kid doesn't even know who I am!" feeling for very long.
Anyway, fun story, and it gave me an excuse to send this email instead of doing some other things I probably ought to be doing.
I first met Tress via The Groundlings, the great L.A. based improv company from which came Phil Hartman, Laraine Newman, Paul Reubens, Jon Lovitz and a whole lot of other folks you know and have enjoyed. You would often see someone on the Groundlings stage and instantly think, "Hey, that person's going to have a great career!" So it was with Tress…and it didn't take any experience at talent-scouting to think that. Pretty damned obvious if you ask me.
Before I made my voice-directing debut with that Wall Walkers special, I asked Gordon Hunt at Hanna-Barbera if I could sit in on some recording sessions and observe. There was briefly a policy at the studio that writers and story editors could not attend recording sessions because they had a tendency to slow things down by asking to change lines or to usurp the director's authority. Also, I think Bill Hanna wanted us in our offices writing and editing as much as possible.
This was not Gordon's decree but he had to follow it…but he said I could sit in on recordings of shows I didn't write. That was fine with me and I think the first one I attended was a Scooby Doo in which Tress did guest star voices. My recollection is that by the time I cast her in the Wall Walkers show, she'd done a fair amount of animation even if she hadn't done lead characters…and I'm not sure she hadn't.
I didn't give a moment's thought to whether "her name would one day seem perfectly at home next to those of folks like Daws Butler and Frank Welker." I just knew she'd do a good job in the show…and she did.
I was not intimidated by having such a stellar cast on my first directing job. On the contrary, I thought they were so good that I couldn't possibly botch things up…and that is not false modesty or any other kind. I actually thought that. As I quickly learned, the secret to voice-directing was to hire actors who were so good, they didn't need much directing…if any.