Seth Gilliam is an American actor best known for his roles AMC's The Walking Dead, HBO's The Wire and HBO's Oz. It was these roles that really made his career. While these are a few of his more notable roles, he's known for other projects as well, such as the award-winning film Still Alice.
In the Eyes of a Stranger
Emergency Room Doctor
Assault at West Point: The Court-Martial of Johnson Whittaker