Liddi had previously directed for such television programs as The Secret World of Alex Mack, Xena: Warrior Princess, and Beverly Hills, 90210. She went on to direct two episodes of UPN's The Twilight Zone as well as multiple episodes of Whoopi Goldberg's Strong Medicine and the NBC series Las Vegas, ED, and Friday Night Lights. Her other television directorial credits include single episodes of CSI (guest starring Anne Ramsay), Roswell (starring William Sadler), Boston Legal (starring William Shatner and Rene Auberjonois), Monk (featuring Stanley Kamel), The 4400 (executive produced by René Echevarria and Ira Steven Behr), and J.J. Abrams' What About Brian.