Filmography
| Year | Title | Role | Notes |
|---|---|---|---|
| 1989 | Mother's Courage: The Mary Thomas Story, AA Mother's Courage: The Mary Thomas Story | Nero | |
| 1989 | Package, TheThe Package | Field Soldier | |
| 1991 | Five Heartbeats, TheThe Five Heartbeats | Dresser | |
| 1992 | Mo' Money | Tom Dilton | as Harry J. Lennix |
| 1992 | Bob Roberts | Franklin Dockett | |
| 1994 | Guarding Tess | Kenny Young | |
| 1995 | Clockers | Bill Walker | |
| 1996 | Get on the Bus | Randall | |
| 1997 | Hellcab | Irate Boyfriend | as Harry J. Lennix |
| 1997 | ER | Dr. Greg Fischer | 6 episodes |
| 1999 | Titus | Aaron | Satellite Award for Best Supporting Actor – Motion Picture Drama Nominated - Chlotrudis Award for Best Supporting Actor |
| 2002 | Keep the Faith, Baby | Adam Clayton Powell, Jr. | Black Reel Award for Best Actor in a Television Movie/Mini-Series NAMIC Vision Award for Best Performance - Drama Nominated - Image Award for Outstanding Actor in a Television Movie, Mini-Series or Dramatic Special Nominated - Satellite Award for Best Actor – Miniseries or Television Film |
| 2002 | Pumpkin | Robert Meary | |
| 2002 | Collateral Damage | Dray | |
| 2003 | Matrix Reloaded, TheThe Matrix Reloaded | Commander Lock | |
| 2003 | Human Stain, TheThe Human Stain | Mr Silk | |
| 2003 | Matrix Revolutions, TheThe Matrix Revolutions | Commander Lock | |
| 2004 | Chrystal | Kalid | |
| 2004 | Barbershop 2: Back in Business | Quentin Leroux | |
| 2004 | Suspect Zero | Rich Charleton | |
| 2004 | Ray | Joe Adams | Nominated - Screen Actors Guild Award for Outstanding Performance by a Cast in a Motion Picture |
| 2005 | House M.D. | John Henry Giles | 1 episode |
| 2005-6 | Commander in Chief | Jim Gardner | Nominated - Image Award for Outstanding Supporting Actor in a Drama Series |
| 2006 | Sharif Don't Like It | Tom | |
| 2007 | Stomp the Yard | Nate | |
| 2007 | Resurrecting the Champ | Bob Satterfield, Jr. | |
| 2007 | Across the Universe | Army Sergeant | |
| 2008 | Little Britain USA | President of the United States | |
| 2009 | State of Play | Det. Donald Bell | |
| 2009–10 | Dollhouse | Boyd Langton | |
| 2010 | Mr Sophistication | Ron Waters | |
| 2012 | A Beautiful Soul | Jeff Freeze | Post-production |
| 2013 | Man of Steel | General Swanwick | filming |
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