This is a scene from the episode "All the Rage." It features Joe Morton as Henry Deacon and James Callis as Trevor Grant.
This is a photo from the 7/23/10 episode of Eureka. It features Colin Ferguson as Jack Carter and Erica Cerra as Jo Lupo.
Neil Grayston, as Douglas Fargo, is pictured here in a scene from Eureka. It's courtesy of the episode titled "All the Rage."

Eureka Season 4 Episode 3 Quotes

Jo: It's happening to me too, isn't it?
Carter: Yeah, big time.

So are we looking for Hulk juice or what?