Jamil Walker Smith
Jamil Walker Smith ( born August 20, 1982 in New York City, New York ) is an American actor and voice actor.
Life
His most famous role is the voice of Gerald, a fourth grader and Arnold's best friend in the Nickelodeon TV series Hey Arnold!. He also appeared in several other series like Sister, Sister Girlfriends, Bones - The Bone Hunter, The X-Files - The Files and The Bernie Mac Show. In addition to his acting, he writes and plays roles in his own short film projects in which he also directs. In addition, he had taken over from 2009 to 2011 in the third series of the Stargate series, Stargate Universe, the role of Master Sergeant Ronald Greer.