Cast Credits Sabrina, the Teenage Witch (1996) Guest starring as Bob Vila Episode 2x11: Oh What a Tangled Spell She Weaves (Dec 5, 1997) Home Improvement (1991) Guest starring as Bob Villa (3 episodes) Episode 3x25: The Great Race II (May 25, 1994) [Special Guest Star] Episode 2x25: The Great Race (May 19, 1993) [Special Guest Star] Episode 1x17: What About Bob? (Feb 11, 1992) [Special Guest Star]