James Callis has remained busy since the end of his role as Dr. Gaius Baltar in "Battlestar Galactica," including an upcoming stint on the ABC series "FlashForward."

But fans of the Syfy series "Eureka" need to get ready. Callis is slated to be a series regular in the fourth season of the grounded show set in a town filled with geniuses.

"Eureka" production begins this week in Vancouver, British Columbia, and Callis is ready to go, said Mark Stern, Syfy's executive vice president of development. Callis will play Dr. Grant in the season that's expected to premiere July 9.

Grant, according to Syfy, is a former resident of the town whose unexpected return is cause for serious alarm. He's also expected to create some friction between himself and Sheriff Jack Carter (Colin Ferguson) since he has a romantic interest in Allison Blake, played by Salli Richardson-Whitfield.

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