
Mike Hagerty
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.
Known For

Grey's Anatomy
2005 · tv

CSI: Crime Scene Investigation
2000 · tv

Friends
1994 · tv

American Dad!
2005 · tv

Desperate Housewives
2004 · tv

Seinfeld
1989 · tv

Monk
2002 · tv

Brooklyn Nine-Nine
2013 · tv

ER
1994 · tv

Star Trek: The Next Generation
1987 · tv

Curb Your Enthusiasm
2000 · tv

Cheers
1982 · tv

Glee
2009 · tv

Ghost Whisperer
2005 · tv

Boston Legal
2004 · tv

Medium
2005 · tv

Married... with Children
1987 · tv

The Goldbergs
2013 · tv

Community
2009 · tv

Entourage
2004 · tv

Good Luck Charlie
2010 · tv

Angel
1999 · tv

The Wonder Years
1988 · tv

The Drew Carey Show
1995 · tv

Family Ties
1982 · tv

Deadwood
2004 · tv

The Mindy Project
2012 · tv

Martin
1992 · tv

Arli$$
1996 · tv

7th Heaven
1996 · tv