David Dale Della Rocco (born May 4, 1952) is an American comedian and actor best known for his supporting role in the 1999 film "The Boondock Saints".
 Della Rocco is a friend of "The Boondock Saints" writer and director Troy Duffy and his role was written specifically for him, playing a character also named David Della Rocco, bringing many of his real-life mannerisms and flair to the character, as well as the character's nickname, "The Funny Man".
 He played the part of a low-level mobster who helps his two friends, the MacManus brothers, in ridding Boston of criminals and evil.
 David Della Rocco returns as "Rocco" in the sequel "" in a dream sequence guiding the MacManus brothers on their mission.
A Man Apart is a 2003 American vigilante action film directed by F. Gary Gray and released by New Line Cinema.
 The film stars Vin Diesel and Larenz Tate.
 The story follows undercover DEA agent Sean Vetter who is on a vendetta to take down a mysterious drug lord named Diablo after his wife is murdered.
 The film was released in the United States on April 4, 2003.
Death Wish is a 1974 American vigilante action film, loosely based on the 1972 novel of the same name by Brian Garfield.
 The film was directed by Michael Winner and stars Charles Bronson as Paul Kersey, a man who becomes a vigilante after his wife is murdered and his daughter sexually assaulted during a home invasion.
 It was the first of the "Death Wish" film franchise.
Death Wish is an upcoming American vigilante action film directed by Eli Roth, a remake of the 1974 film of the same name which starred Charles Bronson in the lead, based on the 1972 novel written by Brian Garfield.
 The remake will star Bruce Willis as main character Paul Kersey, and is scheduled to be released on November 22, 2017, by Metro-Goldwyn-Mayer.
Eli Raphael Roth (born April 18, 1972) is an American film director, producer, writer, and actor.
 As a director and producer, he is most closely associated with the horror genre, first coming to prominence by directing the 2005 film "Hostel" and its 2007 sequel, "".
 As an actor, his most prominent role was as Donny "The Bear Jew" Donowitz in Quentin Tarantino's war film "Inglourious Basterds" for which he won both a SAG Award (Best Ensemble) and a BFCA Critic's Choice Award (Best Acting Ensemble).
 Journalists have included him in a group of filmmakers dubbed the Splat Pack for their explicitly violent and bloody horror films.
 In 2013, Roth received the Visionary Award for his contributions to horror, at the Stanley Film Festival.
 His most recent directorial effort was the 2015 erotic horror film "Knock Knock".
 His next project is the vigilante action film "Death Wish", a remake of the 1974 original.
The Exterminator is a 1980 American vigilante action film written and directed by James Glickenhaus.
 It stars Robert Ginty as the Vietnam War veteran John Eastland, also known as "The Exterminator".
 When a group of thugs paralyze his friend, Eastland becomes a vigilante; embarking on a mission to cleanse New York of organized crime.
 The film also stars Samantha Eggar, Christopher George and Steve James.
Kondaveeti Donga (English: The Thief of Kondaveedu) is a 1990 Telugu-language vigilante action film directed by A. Kodandarami Reddy starring Chiranjeevi, Vijayashanti and Radha in key roles.
 Upon release the film received positive reviews, and emerged as a blockbuster.
 Subsequently, the film was dubbed into Tamil as "Thangamalai Thirudan".
 The technically brilliant film was the first Telugu film to be released on a 70 mm 6-Track Stereophonic sound.
 The production design by Bhaskar Raju, with background score, and music by Illayaraja received positive reviews.
 The film had collected a distributors share of 7.4 million on its opening weekend.
The Boondock Saints is a 1999 American vigilante action film written and directed by Troy Duffy.
 The film stars Sean Patrick Flanery and Norman Reedus as fraternal twins, Connor and Murphy MacManus, who become vigilantes after killing two members of the Russian Mafia in self-defense.
 After both experience an epiphany, the brothers, together with their friend "Funny Man" (David Della Rocco), set out to rid their home city of Boston, Massachusetts of crime and evil, all while being pursued by FBI Agent Paul Smecker (Willem Dafoe).
Savage Streets is a 1984 American vigilante action film directed by Danny Steinmann and starring Linda Blair.
 The film premiered on October 5, 1984.
The Punisher is a 2004 American vigilante action film based on the Marvel Comics character of the same name, starring Thomas Jane as the antihero Frank Castle/The Punisher and John Travolta as Howard Saint, a money launderer who orders the death of Castle's entire family.

Question: David Della Rocco had a supporting role in this 1999 American vigilante action film written and directed by who
Answer: Troy Duffy