This series, starring John Lithgow, is a unique, captivating 1990s sitcom, despite being overshadowed by popular shows like Friends and Seinfeld.

After watching Kristen Johnston in Chuck Lorre's new sitcom, Leanne, on Netflix, viewers should watch her performance in a classic sci-fi show, where she starred alongside Joseph Gordon-Levitt.

Sometimes it’s easy to get confused. I didn’t realize “Third Rock from the Sun” was a TV show until recently.

Johnston praises Lithgow for setting the example of "how to be on a set and how to be a graceful, cool person that everyone wants to work with" Speaking exclusively to PEOPLE, Johnston, 57, reveals ...