O is a 2001 American romantic thriller film, and a modern adaptation of William Shakespeare's Othello, set in an American high school. It stars Mekhi Phifer, Julia Stiles, and Josh Hartnett. It was directed by Tim Blake Nelson and written by Brad Kaaya. The film contains many different styles of music, ranging from rap to opera. It was filmed in Charleston, South Carolina in the spring of 1999. Originally intended for release for October 17, 1999, it was shelved following the Columbine High School massacre; O was finally released on August 31, 2001. The film grossed $16 million at the United States box office, which was seen by distributor Lions Gate Films as a "box office success".

Mekhi Phifer is an American actor. He portrayed Dr. Greg Pratt on NBC's long-running medical drama ER from 2002 to 2008, and had a co-starring role opposite rapper Eminem in the 2002 feature film 8 Mile. He was a recurring cast member on the Showtime drama House of Lies, and also starred as CIA officer Rex Matheson in Torchwood: Miracle Day. Phifer is also known for his appearance in the music video for "The Boy Is Mine" by Brandy and Monica.