Season One
Pilot
Episode #: 101
Air Date: 07.18.06
Our Rating: 
U.S. Marshal Jack Carter finds himself in a small town populated by brilliant scientists, where an energy vortex is striking without warning and leaving death and destruction.
Many Happy Returns
Episode #: 102
Our Rating: 
When a recently deceased resident turns up alive after her funeral, Carter discovers that her husband had created a copy of her. A shadowy figure pays the town a visit.
Before I Forget
Episode #: 103
Air Date: 08.01.06
Our Rating:
When Carter suffers from short-term memory loss and appears to have shot Henry, the trail leads back to a renowned scientist -- a personal friend of Henry's.
Alienated
Episode #: 104
Air Date: 08.08.06
Our Rating:
A Senator responsible for Global Dynamics' funding visits the town, only to find himself under suspicion by a group who believe he is an alien.
Invincible
Episode #: 105
Air Date: 08.15.06
Our Rating:
Jack is asked to escort a paranoid researcher who is on the verge of a breakthrough in tissue regeneration. But a lab accident leaves the man seemingly indestructible.
Dr. Nobel
Episode #: 106
Air Date: 08.22.06
Our Rating:
Fargo and Spencer accidentally activate a weapon of mass destruction from a bygone era, forcing the town to turn to the senile old man who once designed it.
Blink
Episode #: 107
Air Date: 08.29.06
Our Rating:
Carter investigates an unusual car accident and finds a group of ambitious young researchers who are using a drug that gives them a super-speed edge over the competition.
Right as Raynes
Episode #: 108
Air Date: 09.05.06
Our Rating:
When a former resident of Eureka returns to town, the city's many computer systems begin to suffer from an aggressive virus.
Primal
Episode #: 109
Air Date: 09.12.06
Taggart achieves a medical breakthrough while Fargo invents a device that bridges the divide between computers and human brains. (TV Guide)
Purple Haze
Episode #: 110
Air Date: 09.19.06
Strange behavior exhibited by the townspeople is investigated by Carter, who has to solve the mystery before Stark makes a decision that could affect the world. (TV Guide)
H.O.U.S.E. Rules
Episode #: 111
Air Date: 09.26.06
A bad day in the lab forces Carter to rethink his decision to live in Eureka, prompting an intervention from S.A.R.A.H. (the Self Activated Residential Automated Habitat). (TV Guide)
Once in a Lifetime
Episode #: 112
Air Date: 10.03.06
Ambition trumps common sense in the first-season finale when Stark is given a chance to try the top-secret Artifact. Once it's tested, Eureka warps into the future and ends up in 2010, where the town is different. (TV Guide)