Television:
* Seinfeld (1989-1998) as Cosmo Kramer: This is arguably his most famous role, where he played the eccentric and lovable neighbor of Jerry Seinfeld.
* The Michael Richards Show (2000-2001): A sitcom starring Richards himself, which unfortunately didn't achieve the same success as Seinfeld.
* Curb Your Enthusiasm (2000-present): Richards has had recurring appearances on this HBO comedy, playing a fictionalized version of himself.
* The King of Queens (2005): He appeared in a recurring role as a neighbor of Doug Heffernan.
* Ugly Betty (2006-2010): Richards had a guest role in this comedy-drama series.
* The Big Bang Theory (2010): He appeared in a guest role as Professor Proton in this popular sitcom.
* Community (2011-2015): Richards had a recurring role as Professor Ian Duncan, a troubled yet brilliant history professor.
* Hot in Cleveland (2011-2015): Richards appeared in a recurring role as a character called “Mr. K”.
Movies:
* The Secret of NIMH (1982): He voiced the character of Justin in this animated film.
* The Santa Clause (1994): Richards played a small role in this holiday classic.
* Trial and Error (1997): He starred in this comedy film with Jeff Goldblum.
* The Out-of-Towners (1999): A comedy film with Steve Martin and Goldie Hawn, where Richards played a small role.
* The Adventures of Rocky and Bullwinkle (2000): He played the role of Boris Badenov in this live-action adaptation of the animated classic.
* The Benchwarmers (2006): Richards played a minor role in this comedy film.
This is just a partial list of Michael Richards' projects. He has also made numerous appearances in various TV shows and movies, and continues to work in the entertainment industry.