Special Guest Stars Richard Hatch as Tom Zarek Guest Stars Donnelly Rhodes as Dr. Cottle Kate Vernon as Ellen Tigh Sam Witwer as Crashdown Co Starring Michael Hogan as Saul Tigh Aaron Douglas as Galen Tyrol Tahmoh Penikett as Karl "Helo" Agathon Alessandro Juliani as Felix Gaeta Kandyse McClure as Anastasia "Dee" Dualla Nicki Clyne as Callandra "Cally" Henderson Leah Cairns as Lt. Margaret "Racetrack" Edmondson Paul Campbell as Billy Keikeya Jennifer Halley as Ensign Diana "Hardball" Seelix Kerry Norton as Paramedic Layne Ishay Chris Shields as Cpl. Venner Patricia Idlette as Sarah Porter Malcolm Stewart as Marshall Bagot Kurt Evans as Paramedic Howard Kim Troy Everett as Marine