Monoson starred in the short lived 1990s TV series Prince Street. He also has made guest appearances on a number of TV shows, including Diff'rent Strokes, Beverly Hills, 90210, ER, NCIS, CSI: Crime Scene Investigation, 24, Without a Trace, Seven Days, the Star Trek: Deep Space Nine episode "The Storyteller", and the Star Trek: Enterprise episode "Fortunate Son".