Cue sports (sometimes written cuesports), also known as billiard sports, are a wide variety of games of skill generally played with a cue stick which is used to strike billiard balls, moving them around a cloth-covered billiards table bounded by rubber cushions.

Historically, the umbrella term was billiards. While that familiar name is still employed by some as a generic label for all such games, the word's usage has splintered into more exclusive competing meanings in various parts of the world. For example, in British and Australian English, "billiards" usually refers exclusively to the game of English billiards, while in American and Canadian English it is sometimes used to refer to a particular game or class of games, or to all cue games in general, depending upon dialect and context.

There are three major subdivisions of games within cue sports:

More obscurely, there are games that make use of obstacles and targets, and table-top games played with disks instead of balls.

Billiards has a long and rich history stretching from its inception in the 15th century, to the wrapping of the body of Mary, Queen of Scots, in her billiard table cover in 1586, through its many mentions in the works of Shakespeare, including the famous line "let's to billiards" in Antony and Cleopatra (1606–07), and through the many famous enthusiasts of the sport: Mozart, Louis XIV of France, Marie Antoinette, Immanuel Kant, Napoleon, Abraham Lincoln, Mark Twain, George Washington, French president Jules Grévy, Charles Dickens, George Armstrong Custer, Theodore Roosevelt, Lewis Carroll, W.C. Fields, Babe Ruth, Bob Hope, Jackie Gleason, and many others.

Ken Doherty (born 17 September 1969) is an Irish professional snooker player. He is the only player ever to have been world amateur (1989) and world professional champion (1997). He was also World Under-21 champion in 1989.

After two semi-finals in the 1991/92 season (his second as a professional), Doherty reached the final of the 1992 Grand Prix, narrowly losing 10–9 to Jimmy White. In the same event a year later, he lost 6–9 to Peter Ebdon. His first ranking title was the 1993 Welsh Open, enough to take him into the top 16 in the world, where he remained until the 2007/08 season. In the 1994 World Championship he reached the quarter-finals, his only run past the first round before 1997.

Doherty became only the third player from outside the United Kingdom (After Australian Horace Lindrum in 1952 and Canadian Cliff Thorburn in 1980) to win the World Championship when he beat Stephen Hendry 18–12 in the 1997 final. Ken also reached the World Championship final in 1998 (losing to John Higgins) and in 2003, losing narrowly to Mark Williams. The latter run was noted for some outstanding comebacks, including final-frame wins over Graeme Dott and Shaun Murphy, a 13–8 win over John Higgins in a match where Doherty raced ahead 10–0 but Higgins fought back to 10–7, and a semi-final fightback from 9–15 to beat Paul Hunter 17–16. In that championship he played more frames than anyone before or since. In the final, Williams led 11–4 but Doherty fought back to 12–12 and 16–16. In frame 33, Doherty missed the 2nd to final red with a clearance there for the taking. Williams won that crucial frame and the next to prevail 18–16.

Joseph James "Joe" Rogan (born August 11, 1967) is an American martial artist, stand-up comedian, actor, writer and color commentator. He is best known for playing Joe Garrelli on the NBC sitcom NewsRadio, commentating for the Ultimate Fighting Championship, hosting the NBC reality show Fear Factor and The Joe Rogan Experience podcast.

Rogan was born in Newark, New Jersey. His paternal grandfather was Irish and the remainder of his ancestry is Italian.

In 1981, at age fourteen, he became a practitioner of Kenpo Karate before transitioning to Taekwondo. He eventually gained a 2nd dan black belt. A four-time state champion in Massachusetts, in 1987 he was the USA Taekwondo U.S. Open Champion. In 1996, he began training in Brazilian Jiu-Jitsu under Jean Jacques Machado, eventually earning his brown belt. In addition, he holds a brown belt in 10th Planet Jiu-Jitsu under Eddie Bravo.

He also practiced and competed in kickboxing.

In 1994, he co-starred on the Fox comedy Hardball as Frank Valente, the young, ego-centric star player on a fictional professional baseball team. From 1995 to 1999, he co-starred on the comedy NewsRadio. He portrayed Joe Garrelli, the electrician at WNYX, a news radio station in New York City. In 2002, he appeared on the episode "A Beautiful Mind" of Just Shoot Me as Chris, Maya Gallo's boyfriend. In 2011, Rogan played his first major character in a movie in the Kevin James movie Zookeeper. He is slated to play himself in an upcoming action-comedy starring Kevin James called Here Comes the Boom, set to be released in the summer of 2012.