JACK FM is a radio station branding licensed by Sparknet Communications to 46 media markets in Canada, the United States, the United Kingdom, and Russia. Stations adopting this branding play a mix of 1960s, 1970s, 1980s, and 1990s hits with some current hot adult contemporary singles.

Jack's slogan "playing what we want" can also be considered as more of a motto or philosophy of their programming. They promote themselves as having a larger and more varied playlist than other commercial radio stations. It is not unusual for a Jack FM station to have a playlist of over 1000 songs compared to normal FM stations which sometimes have playlists of fewer than 500 songs.

Further distinguishing the format from traditional radio is the fact that many Jack FM radio stations do not use DJs or have traffic or weather reports; indeed, the format "has been likened to an iPod set on shuffle." The stations are officially classified as the Variety Hits or Adult Hits format by radio research companies.

One of the early originators of this format was radio programmer Bob Perry, on an American Internet radio stream in 2000. Perry named the station after a fictitious persona, "Cadillac Jack" Garrett, "a hard-living radio cowboy." The back story created by Perry for the original web stream was that Garrett, a DJ who had worked a lot of "big sticks," finally got his own radio station and after years of being told what he was to play on-air was creating a station where the motto was "playing what we want." However, according to Rogers Communications, the only thing taken, without permission, for the first Jack-FM radio station, in Vancouver, was the name and the tagline. Pat Cardinal, one of the first JACK Program Directors, says that he was unaware of the type of music on the American website and that "JACK" was one of several names that were considered for the format. Rogers Communications came to an agreement with Perry for the use of the Jack-FM name in Canada soon after the launch.

Paul Darrow (born Paul Valentine Birkby on 2 May 1941) is an English actor best known for his portrayal of Kerr Avon in the BBC science fiction television series Blake's 7. He also guest starred twice on Doctor Who, playing Captain Hawkins in the serial Doctor Who and the Silurians which was transmitted in 1970 and Maylin Tekker in the serial Timelash which was transmitted in 1985.

Darrow was born in Surrey, England, and attended Haberdashers' Aske's Boys' School before studying at the Royal Academy of Dramatic Art.

The popularity of his role as Avon has tended to overshadow his extensive work in theatre and television. He also plays the character of Kaston Iago in the Kaldor City audios. He appeared in all but the first episode of Blake's 7. In the final episode of the series, in which all of the main characters (except Avon) are seen to be shot, Avon shot dead the character Klyn - played by Paul Darrow's wife, Janet Lees Price. Avon himself survived to the end credits - when gunshots are heard, perhaps signifying his death.

Michael Elliot "Mike" Epps (born November 18, 1970) is an American stand-up comedian, actor, film producer, writer and rapper. He is best known for playing Day-Day Jones in Next Friday and the sequel-to-the-sequel, Friday After Next, and also appearing in The Hangover, as "Black Doug". He was the voice of Boog in Open Season 2 (the sequel to Open Season), but was replaced by Matthew J. Munn in Open Season 3.

As of 2010, Epps was the executive producer on a documentary about the life story of a former member of Tupac Shakur's Outlawz, Napoleon: Life of an Outlaw.

Epps was born Michael Elliot Epps at Wishard Hospital in Indianapolis, IN . Epps' natural comedic ability was encouraged at an early age, and he began performing stand-up as a teenager. Epps moved to Atlanta where he worked at the Comedy Act Theater, before moving to Brooklyn to star in Def Comedy Jam in 1995. Epps ended up on the Def Comedy Jam tour and starred in two of HBO's Def Comedy Jam broadcasts.

Epps began his professional career by joining the Def Comedy Jam tour in 1995 and starred in two of HBO's Def Comedy Jam broadcasts.

Craig Conroy (born September 4, 1971) is an American former professional ice hockey player and currently the Special Assistant to the General Manager of the Calgary Flames. A sixth round selection of the Montreal Canadiens at the 1990 National Hockey League (NHL) Entry Draft, Conroy played 1,009 NHL games for the Canadiens, St. Louis Blues, Calgary Flames and Los Angeles Kings during a professional career that spanned from 1994 to 2011. Internationally, he twice played with the United States National Team – at the 2004 World Cup of Hockey and the 2006 Winter Olympics.

Developed as a defensive specialist through much of his career, Conroy was twice a finalist for the Selke Trophy as the league's top defensive forward and was nominated for the Lady Byng Memorial Trophy as its most gentlemanly player. He played over 1,000 games in the NHL and was the second oldest player in league history to reach that milestone. Conroy, who enjoyed his greatest offensive seasons with the Flames, is a former captain of the team and was twice honored by the organization for his leadership, dedication and humanitarian efforts.