At the end of "Dallas run in 1991, Duffy began another television role, as Frank Lambert on the family sitcom, "Step by Step" in which he co-starred with Suzanne Somers. The series ran until 1998, and Duffy also directed numerous episodes. Also in the 1990s, he appeared in two "Dallas" reunion television movies; ' (1996) and ' (1998), both of which he also co-produced. He has reunited on several occasions with many of his "Dallas" co-stars both onscreen and off, most notably for the non-fiction television special ' in 2004. Duffy later continued to act in the occasional guest or voice acting appearance, including the series "Family Guy" (in which he appeared in a live action scene with Victoria Principal as they spoofed the "Dallas" shower scene), as well as "Justice League" and "Touched by an Angel". Duffy starred in the television movies "Falling in Love With the Girl Next Door" and "Desolation Canyon". In 2006, he began a recurring role on the daytime soap opera "The Bold and the Beautiful" as Stephen Logan. From April to July 2008, he hosted "Bingo America", a partially interactive game show on GSN.