Conversation so far:
What did Phil Hartman do in his early career?
Working alone as a graphic artist, Phil Hartman frequently amused himself with flights of voice fantasies.
What did Phil Hartman do as a graphic artist?
After graduating from California State University, Northridge with a degree in graphic arts, Phil Hartman designed album covers for bands including Poco and America.
What were the voices Phil Hartman did to amuse himself while working as a graphic artist?
Did Phil Hartman write anything else besides for The Groundlings?
Phil Hartman met comedian Paul Reubens and the two became friends, often collaborating on writing and comedic material. Together they developed The Pee-wee Herman Show.
How long did Phil Hartman work on The Pee-wee Herman Show?
Although Phil Hartman had considered quitting acting at the age of 36 due to limited opportunities, the success of Pee-wee's Big Adventure brought new possibilities and changed his mind.
What were the possibilities that the success of the film Peewee's Big Adventure brought to Phil Hartman?
After a creative falling-out with Reubens, Phil Hartman left the Pee-Wee Herman project to pursue other roles.

Question: What other roles did he take on?
Self-contained rewrite: What other roles did Phil Hartman take on besides his role in the Pee-Wee Herman project?