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Mekhi Thira Phifer ( /mɛˌkaɪ ˈfaɪfər/; born December 29, 1974) is an American actor. He portrayed Dr. Greg Pratt on NBC's long-running medical drama ER and his co-starring role opposite Eminem in the feature film 8 Mile. He was a regular on the Fox crime show Lie to Me in the role of Ben Reynolds, before season 3, and also starred as CIA agent Rex Matheson in Torchwood: Miracle Day. Phifer was born in Harlem, New York City, the son of Rhoda Phifer, a high school teacher; he grew up in a single-parent household with his mother. In 1995, Phifer attended an open casting call for... MORE

Mekhi Thira Phifer ( /mɛˌkaɪ ˈfaɪfər/; born December 29, 1974) is an American actor. He portrayed Dr. Greg Pratt on NBC's long-running medical drama ER and his co-starring role opposite Eminem in the feature film 8 Mile. He was a regular on the Fox crime show Lie to Me in the role of Ben Reynolds, before season 3, and also starred as CIA agent Rex Matheson in Torchwood: Miracle Day. Phifer was born in Harlem, New York City, the son of Rhoda Phifer, a high school teacher; he grew up in a single-parent household with his mother. In 1995, Phifer attended an open casting call for director Spike Lee’s Clockers, beating over a thousand others to get the lead role as a narcotics dealer embroiled in a murder cover-up. He followed that role with another in the comedy spoof feature High School High (which also starred his former wife Malinda Williams) and continued by co-starring in the fright flick I Still Know What You Did Last Summer, starring Jennifer Love Hewitt and Freddie Prinze, Jr. He portrayed Dr. Gregory Pratt on the medical drama ER, that he started in April 2002. Phifer left the show in September 2008, in the first episode of Season 15. His character was tragically killed off in LESS