5x15 - The Cosby Show

With the rest of the family gone for the night, Theo throws a "small" party that gets out of control. Troy Winbush as Denny. Reno Wilson as Howard. First appearance of Alex Ruiz as Lou. Cameo appearance by Joie Lee. Phylicia Rashād (Clair), Malcolm-Jamal Warner (Theo), Tempestt Bledsoe (Vanessa), and Elizabeth Narvaez (Kara) appear on the episode of A Different World which airs later that evening.