Conversation so far:
What was Phil Hartman's style considered?
was described as "a regular guy and, by all accounts, one of show business' most low-key, decent people".
How did this help his career?
often played seedy, vain or unpleasant characters as well as comedic villains.
He noted that his standard character was a "jerky guy", and described his usual roles.
Did he enjoy playing these parts?
Hartman enjoyed playing such roles because he "just want[ed] to be funny, and villains tend to be funny because their foibles are all there to see..

Question: What parts was he famous for?
Self-contained rewrite: What parts was Hartman famous for?