Loves sports and originally wanted to be an NHL star. That all changed when he got kicked off his high school team because of poor grades.

Denis got behind the wheel of a fire engine during September 11th when the entire New York fire department was short handed responding to the collapse of the World Trade center.

Originally had a role in Beautiful Girls (1996) directed by good friend Ted Demme, but had to pull out due to scheduling conflicts.

His interest in the perils of firemen and to co-create the series "Rescue Me" (2004) stemmed from a tragic 1999 warehouse fire in his hometown of Worcester, Massachusets, that took the lives of six firemen, including his cousin and a childhood friend.

His "angry comedian" act, which he first used in No Cure for Cancer (1992) (TV), is considered by many to be based on the comedy act of Bill Hicks.

His song "Asshole" portrays a stereotype of American humor and lifestyles.

Established the Leary Firefighters Foundation. When 9/11 happened, his foundation went into action and was hailed as "the second-quickest charity" to get money into the hands of grieving families. One auction alone raised $600,000.

He starred in three films directed by Ted Demme: Who's the Man? (1993), The Ref (1994) and Snitch (1996). He also co- produced Blow (2001). Demme also directed both his concert specials.

Was offered the role of Dignam in The Departed (2006), but turned it down due to scheduling conflicts with his television show, "Rescue Me" (2004).

Founded the Leary Firefighters' Foundation charity in response to the Dec. 3, 1999 warehouse fire that killed six firefighters in his hometown of Worcester, MA. His cousin Jeremiah Lucey was among the six heroic firefighters killed. Leary also established a second division of LFFF, the Leary Firefighters' Foundation Fund for New York's Bravest in response to the FDNY's losses in the Sept. 11th attacks.

Lives in NYC

Has dual U.S and Irish Citizenship.

Holds an Irish passport.

Good friend of Mario Cantone and Gina Gershon at Emerson College.

Was offered Mark Wahlberg`s role in The Departed (2006), but turned it down to scheduling conflicts with his television series, "Rescue Me" (2004). Leary has since commended Wahlberg`s performance in the film with admiration.

Joe Rogan has claimed that Leary`s "angry comedian" act, first used in his stage show "No Cure for Cancer" (later a Showtime special, No Cure for Cancer (1992) (TV)) was based on the comedy act of Bill Hicks. Leary skewered the charge (http://us.imdb.com/news/ni0070130).

Is a big Boston Red Sox fan.

Denis got behind the wheel of a fire engine during September 11, 2001, when the New York Fire Department was short-handed responding to the collapse of the World Trade center.

Father of Jack Leary.

Irish-American.

His role on "Rescue Me" (2004) marks his first Golden Globe nomination.

He is one of the six godparents (all males) of Damian Charles Bing, son of Elizabeth Hurley, and attended the child`s baptism at Immaculate Conception church in Mayfair, London.

His song "A**hole" portrays a stereotype of American humor and lifestyles.

He starred in three films directed by Ted Demme: Who`s the Man? (1993), The Ref (1994), and Snitch (1996). Demme also directed both his concert specials. Leary and Demme co-produced Blow (2001), and both men were involved in SUBWAYStories: Tales from the Underground (1997) (TV).

Founded the Leary Firefighters Foundation (LFF) charity in response to the Dec. 3, 1999, warehouse fire that killed six firefighters in his hometown of Worcester, Massachusetts. His cousin Jeremiah Lucey was among the six heroic firefighters killed.

Loves sports and originally wanted to be an NHL star. That all changed when he got kicked off his high school hockey team because of poor grades.

Is the second of four children.

Cousin of Conan O`Brien and Jane O`Brien.

Graduated from Emerson College

Originally had a role in Beautiful Girls (1996), directed by good friend Ted Demme, but had to pull out due to schedule conflicts.