The Reverend Jim from Taxi, and The Brown-Haired-Sister-From-Insert Sitcom Name Here
Joanna Kerns from TVs Growing Pains, and Random Hot Guy.
The Gay one--seriously, he prepped for the show by getting a facial and dancing, and Biff Tannen, from Back To The Future I, II, III, IV, V, VI, VII, VII not XI, but X.
Former Lesbian and Full-time-Crazy, Anne Heche, and Meg Ryan, before the lip enhancement.
Veteran character actor James Earl Jones, and Telemundo's Drew Carey.