Haskell is best remembered for his dual performance in the 1970s in the New York City, New York, Off-Broadway musical-theatre production Godspell and its subsequent film adaptation Godspell: A Musical Based on the Gospel According to St. Matthew (1973) appearing as both John the Baptist and Judas Iscariot.
Haskell is best known for his performances in the 1970s Off-Broadway production of "Godspell" and its subsequent film adaptation, where he played both John the Baptist and Judas Iscariot.