[9] After relocating to New York City, he performed in The Mad Dog Blues at Shep in Rep Rock N' Roll Theatre in 1979.
[1][11] The play depicts domineering electrician Rip, who manipulates the lives of his girlfriend Brandy and manic-depressive apprentice Stan.
A 1986 Los Angeles Times review called Therriault's dialogue "a ripe blend of primitive slang and advanced metaphor.
"[21] Therriault is an alumnus of New Dramatists,[22] and received a 1991 McKnight Foundation Artist Fellowship and residency at the Playwrights' Center in Minneapolis.
[26] His radio play Romance Concerto, about a concert violinist haunted by the memory of lost love, was performed on WNYC in April 1995.
[27] Therriault wrote the script for the 1997 HBO film First Time Felon, starring Omar Epps and Delroy Lindo, and directed by Charles S.
[28] He wrote the screenplay for the 1999 HBO film Witness Protection, starring Tom Sizemore as a mobster who tries to save himself by confessing to the FBI, with Mary Elizabeth Mastrantonio as his wife and Forest Whitaker as a US Marshal, and directed by Richard Pearce.