Many actors have gotten their first big break by taking a guest spot on a television series. But another established tradition is the one of famous actors and other celebrities agreeing to make guest appearances. Friends, The Simpsons, and That '70s Show are just a few of the shows that have been able to boast of snagging multiple stars for guest roles.
Although the majority of these guest appearances have been one-offs, there have been a few, such as Mary Tyler Moore's three-episode arc on That '70s Show, that were expanded beyond one episode. And occasionally, as with Jean Stapleton's performance as Brett Butler's eccentric aunt on Grace Under Fire, these roles have earned the guest star an Emmy nomination.
Here are some of the more notable celebrities who one might be surprised to learn appeared as guest stars on television comedies.