
Acting
Michael Gerard Hagerty (May 10, 1954 – May 5, 2022) was an American actor. He was known for playing comedic blue-collar workers, including his recurring roles as Mr. Treeger, the building superintendent, on Friends and the manager of a muffler shop on HBO's Lucky Louie. Hagerty started acting after being invited by Jim Belushi to join the improv group The Second City. He went on to co-write and co-star in three revues on the troupe's mainstage during the 1980s (Also Available in Paperback — A Retrospective, Orwell That Ends Well, and True Midwest, or No, But I Saw the Movie). He also introduced the lyrics of "Bear Down, Chicago Bears" to its cast and had them memorize and sing the song. He subsequently began acting in films and television shows, beginning with Doctor Detroit in 1983. Hagerty became known for his mustache and thick Chicago accent. Although the majority of his career was spent in television, Hagerty had small roles in many films, and ultimately garnered over 100 acting credits throughout his career. He was recognized for his small character roles in a wide range of popular comedies, including Martin, Cheers, The Wayans Bros., Curb Your Enthusiasm, Friends, Seinfeld, and The Wonder Years. He was one of twenty actors to appear in both Friends and Seinfeld. Hagerty was also a regular on The George Carlin Show, which was his first recurring television role. One of his final acting roles was Somebody Somewhere, which he was still filming at the time of his death.

Grey's Anatomy
2005

CSI: Crime Scene Investigation
2000

American Dad!
2005

Friends
1994

Married... with Children
1987

Desperate Housewives
2004

Star Trek: The Next Generation
1987

Monk
2002

Seinfeld
1989

Brooklyn Nine-Nine
2013

The Drew Carey Show
1995

Curb Your Enthusiasm
2000

Entourage
2004

Glee
2009

Boston Legal
2004

Ghost Whisperer
2005

Cheers
1982

ER
1994

The Goldbergs
2013

Community
2009

Medium
2005

Angel
1999

Murphy Brown
1988

The Mindy Project
2012

The Wonder Years
1988

Good Luck Charlie
2010

Deadwood
2004

Family Ties
1982

Arli$$
1996

Martin
1992

Happy Endings
2011

Dear John
1988

Ally McBeal
1997

The Wayans Bros.
1995

7th Heaven
1996

Crime Story
1986