What Ever Happened to the Cast of 3rd Rock from the Sun?

After ALF, Sheridan landed another iconic role—as Jerry’s mom on Seinfeld, where she became a sitcom legend all over again. That part introduced her to a new generation of fans who instantly recognized her cozy, familiar charm. Few actors can say they were “TV mom” to both Jerry Seinfeld and an alien.

Liz Sheridan continued acting well into her later years, appearing in indie films and making convention rounds. She passed away in 2022, leaving behind one of the most quietly impressive careers in sitcom history. Whether in Scranton or Manhattan, she always felt like family.