Crowe is also the co-owner of the South Sydney Rabbitohs, an Australian National Rugby League team.
The producer of the Australian TV series Spyforce was his mother's godfather, and Crowe (at age five or six) was hired for a line of dialogue in one episode, opposite series star Jack Thompson (in 1994 Thompson played the father of Crowe's character in The Sum of Us).
In 2014, he played a gangster in the film adaptation of Mark Helprin's 1983 novel Winter's Tale, and the title role in the Darren Aronofsky film Noah.
In early 2005, 30 Odd Foot of Grunts as a group had "dissolved/evolved" with Crowe feeling his future music would take a new direction.
He began a collaboration with Alan Doyle of the Canadian band Great Big Sea, and with it a new band emerged: The Ordinary Fear of God which also involved some members of the previous TOFOG line-up.
Crowe began his performing career as a musician in the early 1980s, under guidance from his good friend Tom Sharplin, when he performed under the stage name "Russ Le Roq".
He released several New Zealand singles including "I Just Want To Be Like Marlon Brando", "Pier 13", "Shattered Glass", none of which charted.
In 2005, he re-teamed with A Beautiful Mind director Ron Howard for Cinderella Man.