One of the most famous stars of "Battlestar Galactica," actor James Callis, will be joining another  Syfy series, playing, yet again, a doctor.

Callis will be joining "Eureka" in a new, regular role, Syfy has announced. This time he’ll be Dr. Grant, a former resident of the town of Eureka whose return causes major consternation. "Eureka" returns to the Syfy channel on Friday, July 9.