Mekhi Phifer ( meh-KY FY-fər; born December 29, 1974) is an American actor. Beginning his career in the mid-1990s, Phifer was known for a few notable roles in films including Clockers, Soul Food, High School High and I Still Know What You Did Last Summer. In 2002, he had a co-starring role opposite rapper Eminem in the feature film 8 Mile. His most notable television role is that of Dr. Greg Pratt on NBC's long-running (1994–2009) medical drama ER from 2002 to 2008. In 2013, he became a recurring cast member during season three on the Showtime drama House of Lies. From July to October 2011, he played the role of CIA officer Rex Matheson in the British–American science fiction television show, Torchwood: Miracle Day. In 2024, he starred in the gritty, action feature film, Long Gone Heroes alongside Frank Grillo and Andy Garcia. Phifer also appeared in the 1998 music video for "The Boy Is Mine" by Brandy and Monica.
