Antoniou also had guest roles in the television series Beverly Hills 90210, The Young & The Restless, The Bold & The Beautiful, JAG (1999, along Joan Pringle), Providence (2000 and 2001, with Ed Begley, Jr.), Saved By The Bell, The New Class, Strong Medicine, and Air America. In 1997 he portrayed Maurice in the television comedy Things That Go Bump, with Jennifer Gatti and Gregory Itzin, and in 1999 he appeared as Constantinos the chef in the short film The Virgin.