Time for a high school reunion? Boston Public ended its run on Fox 20 years ago, airing its final episode in primetime television on January 30, 2004, after the network suspended and then canceled the series. (Two unaired episodes did eventually air in syndication, however.)

Boston Public — created by prolific TV producer David E. Kelley — followed teachers, administrators and students at the fictional Winslow High, with Chi McBride, Loretta Devine, Jeri Ryan and others playing faculty at the school.

There were many more big names guesting on the series. Below are some of those impressive additions to the cast.

A few years before Arrested Development began, Arnett guest-starred in the Boston Public season two episode “Chapter Twenty-Nine,” playing a salesman who sells teacher Meredith Peters (Kathy Baker) a prosthetic hand.