I believe the episode in question (yes, one of mine) was entitled
"Take Two," and ended with actual footage of the movie.

The wonderful part about that episode of TRGBs -- and this is
something I kinda aimed at while writing it -- is that there are now
whole bunches of kids out there who are absolutely *convinced* that the
animated series came first, THEN the movie based on it.

The only thing better than messing with somebody's sense of reality
is messing with a whole LOTTA people's sense of reality....

jms

Yeah, I knew Lorenzo Music while we were doing the show, but not
afterward; we never really hung out or anything. He's a roundish,
friendly kind of guy. We always had to separate him from Frank Welker
and Maurice LeMarche in the sound studio, because if they were *ever* in
close proximity, all kinds of hell would break out. One day they got into
a competition to do celebrity farts...little Doris Day squibs, a George
C. Scott roller...we managed to keep it together until Frank let fly with
his version of a William Conrad thunderer...which went on and on and on...
windows blew out...buttons flew off shirts...and when it finally came to
its conclusion, *no one* was able to do *anything* for about twenty
minutes. Shut *everything* down. No one could keep a straight face or
get a line out. And Frank just sat there, smiling innocently.

jms