In early 2010, American television network NBC and two of its late-night talk show hosts, Conan O'Brien and Jay Leno, engaged in a media and public relations conflict over the host and airtime of The Tonight Show, the network's long-running late night program. On January 7, 2010, NBC announced that effective March 1, 2010, Leno's program The Jay Leno Show would be moved from the 10:00 pm weeknight time slot to 11:35 pm and O'Brien's program The Tonight Show with Conan O'Brien would be moved from 11:35 pm to 12:05 am. The scheduling change was attributed to poor ratings of both shows and resultant pressure from NBC affiliates and NBC Universal chief Jeff Zucker. Though not a breach of either host's contract, the change resulted in a public outcry and public demonstrations largely in support of O'Brien.

Shortly after NBC made the schedule change proposal, O'Brien indicated that he would quit his show and leave the network if NBC were to implement it, citing the "destruction" of the venerable franchise which had aired at or around 11:30 pm for over 60 years. The controversy surrounding the scheduling move, described by media outlets as "embarrassing" for the network and a "public relations disaster", led to public support for O'Brien from fellow late-night talk-show hosts and other celebrities along with protests on social networking sites such as Twitter and Facebook.

Conan Christopher O'Brien (born April 18, 1963) is an American television host, comedian, writer, producer and performer. Since November 2010 he has hosted Conan, a late-night talk show that airs on the American cable television station TBS.

O'Brien was born in Brookline, Massachusetts, and raised in an Irish Catholic family. He served as president of the Harvard Lampoon while attending Harvard University, and was a writer for the sketch comedy series Not Necessarily the News. After writing for several comedy shows in Los Angeles, he joined the writing staff of Saturday Night Live, and later of The Simpsons. He hosted Late Night with Conan O'Brien from 1993 to 2009, followed by seven months hosting The Tonight Show with Conan O'Brien, the only person to serve as the permanent host for both NBC programs.

O'Brien was born in Brookline, Massachusetts (a suburb of Boston) to Thomas O'Brien, a physician, epidemiologist, and professor of medicine at Harvard, and Ruth O'Brien (née Reardon), an attorney and partner at the Boston firm Ropes & Gray. He is the third of six children. O'Brien's family is Irish Catholic and descends from pre-Civil War era immigrants. In a Late Night episode, O'Brien paid a visit to County Kerry, Ireland, where his ancestors originated.

Ice cubes are small, roughly cube-shaped pieces of ice, conventionally used to cool beverages. Ice cubes are sometimes preferred over crushed ice because they melt more slowly; they are standard in mixed drinks that call for ice, in which case the drink is said to be "on the rocks."

Ice cubes that are crushed or sheared into irregularly-shaped flakes may add an interesting aesthetic effect to some cocktails. Crushed ice is also used when faster cooling is desired, since the rate of cooling is governed by the number and average radius of the ice particles.

Melting ice cubes sometimes precipitate white flakes, commonly known as "floaties". This is calcium carbonate which is present in many water supplies and is completely harmless.^{[citation needed]}

American physician and humanitarian John Gorrie built a refrigerator in 1844 with the purpose of cooling air. His refrigerator produced ice which he hung from the ceiling in a basin. Gorrie can be considered the creator of ice cubes, but his aim was not to cool drinks: he used the ice to lower the ambient room temperature. During his time, a dominant idea was that bad air quality caused disease. Therefore, in order to help treat sickness, he pushed for the draining of swamps and the cooling of sickrooms.