Conversation so far:
When was Krusty created?
Krusty first appeared in "The Krusty the Clown Show", one of The Simpsons shorts from The Tracey Ullman Show that first aired on January 15, 1989.
What did Krusty do in the episode?
CANNOTANSWER.
Who voiced Krusty?
Dan Castellaneta based his voice characterization on Chicago television's Bob Bell who had a very raspy voice and portrayed WGN-TV's Bozo the Clown from 1960 to 1984.
Was krusty a hit?
CANNOTANSWER.
Are there any other interesting aspects about this article?
Many events in Krusty's life parallel those of comedian Jerry Lewis.

Question: Which events are those?
Self-contained rewrite: Which events in Krusty's life parallel Jerry Lewis's life?