Pardon our sluggishness, but we forgot to give you the answer to last week's trivia question! Sorry for the influx of posts, we're still trying to work our scheduling out.
The answer is: C) Albert Brooks. He was the first celebrity to guest voice on "The Simpsons," in season 1, episode 7 as Cowboy Bob the RV salesman.
It was certainly not his last appearance on the show, either!