Van Zandt is the co-author and star of the Off-Broadway plays You've Got Hate Mail, Silent Laughter, Drop Dead!, and 21 other theatrical plays written with Jane Milmore, including A Night at the Nutcracker, Wrong Window, and summer stock perennial Love, Sex, and the I.R.S. He also wrote The Property Known as Garland for Adrienne Barbeau, which ran Off-Broadway at the Actor's Playhouse in 2006.