Sullivan's first feature film was
The Angry Breed (1968). Other film appearances include
Plaza Suite (1971),
The Other (1972),
The Candidate (1972),
Getting Straight (1970),
Breakfast in Bed (1977) and
Shadow of Doubt (1998). Sullivan portrayed Barbara in the NBC comedy series
Me and Maxx (1980). She has made guest appearances on TV shows, including
Little House on the Prairie,
Dragnet,
Adam-12,
The F.B.I.,
Highway to Heaven,
Love, American Style,
Dan August,
Sanford and Son,
Ironside,
Falcon Crest,
L.A. Law,
All in the Family,
Cannon,
Hawaii Five-O,
The Waltons, and
The Fall Guy. She played the character of Angie in “The Mod Squad” episode “Suffer the Little Children.” Sullivan wrote the play
J for J (
Journals for John) which was prompted after she found a packet of unsent letters (in 1995) written by her father decades earlier to her mentally disabled older brother Johnny (thus, journals for Johnny). The play premiered on October 20, 2001.
John Ritter, who in real life had a disabled brother, played Johnny, Sullivan played herself, and
Jeff Kober portrayed her father Barry. Sullivan taught drama at the University of California at Santa Barbara. ==Personal life==