BoingBoing pal Mike Outmesguine (who you may have spotted on CNN this weekend talking about why it would be A Bad Thing for the federal government to have the power to jam your cellphone in the name of counter-terrorism) says:
David Landers plays the voice of Henry the penguin on the kid show "Oswald" (Oswald the octopus is voiced by Fred Savage) playing on Nickelodeon. I sometimes watch it with my 3 year-old. One episode had Henry's cousin come in from out of town. His cousin was voiced by Michael McKean (who played Lenny.) I can't tell you how funny it was to hear Lenny and Squiggy pestering eachother in a children's show – while appearing as penguins!