Conversation so far:
What shows did Danny DeVito do?
In 1977, DeVito played the role of John 'John John the Apple' DeAppoliso in the Starsky and Hutch episode titled "The Collector".
Was he in any other shows?
In 1986, DeVito voiced the Grundle King in My Little Pony: The Movie while his wife, Rhea Perlman, voiced Reeka the witch.

Question: What other shows was he in?
Self-contained rewrite: Besides Starsky and Hitch and My Little Pony: The Movie, what other shows was Danny DeVito in?