Shull has primarily worked on television beginning with his debut on Fantasy Island starring Ricardo Montalban in (1981). He then appeared on The Fall Guy (1982, with Peter Mark Richman), Highway to Heaven (1985, with Noble Willingham), Dallas (1986, with John Beck and Barry Jenner), and The Young and the Restless (with Jonathan Farwell). Further television credits include guest roles in Boomtown (2003, with Virginia Madsen, Neal McDonough, and Vanessa Williams) and Cold Case (2005, co-executive produced by Roxann Dawson).