[5][6] He appeared in filmed for TV plays such as The Sweet Sad Story of Elmo and Me in 1965.
[9] Hannan appeared in stage musicals with the J. C. Williamson Theatres in the 1960s,[10] including Camelot (1963)[11] Hello, Dolly!
[19][20] On screen he has played a main role on Bellbird as Roger Green,[21] and had a stint on Prisoner beginning 1981.
[10] He starred in the comedy sketch series Don't Ask Us.
[22][23] He voice acted in animated films such as The Phantom Treehouse.