Jeffrey is one of an elite group that had the privilege to work on Warner Bros. sci-fi hit Babylon 5 for all five seasons of the show's production. His versatile talents served him -- and the show -- well, playing the recurring role of Ambassador Kosh. Through the fourth and fifth seasons, four TNT movies and three episodes of Babylon 5:Crusade, Jeffrey was the show's Producer's Associate.

Since B5, Jeffrey's credits include Visual Effects Coordinator on two
Miramax's films, I Still Know What You Did Last Summer and The Faculty, a Segment Producer on A&E's Top Ten, Coordinating Producer on History Channel's prime-time series The MOST, Producer of History Alive:UFO's, also on History Channel, Producer of Race of the Century airing on PBS stations, and Writer/Producer of Ground Rules! for HGTV.

Currently, he is developing new television, film and multimedia programs for his production company, Erthbound Entertainment.