Claim: Denis Leary is a writer.

Denis Colin Leary -LRB- born August 18 , 1957 -RRB- is an American actor , writer , producer , singer and comedian .   Leary was the star and co-creator of Rescue Me , which ended its seventh and final season on September 7 , 2011 . He has starred in many films including playing Captain George Stacy in Marc Webb 's film , The Amazing Spider-Man , Cleveland Browns Head Coach Vince Penn in Ivan Reitman 's film , Draft Day , and as the voice of Francis in A Bug 's Life and Diego in the Ice Age franchise .   From 2015 to 2016 , Leary wrote and starred in the comedy series , Sex & Drugs & Rock & Roll on FX .