Wil Wheaton

Sheldon's old nemesis, WIL WHEATON (guest starring as Himself), returns and invites everyone to a housewarming party. Sheldon threatens to 'defriend' Leonard if he attends. But when he hears that BRENT SPINER (guest starring as Himself), the actor who played Commander Data, will be there, Sheldon decides to go to the party after all... only to discover new levels of treachery. Meanwhile, Howard gets an out-of-this-world opportunity that Bernadette reacts to strongly. Also available on iTunes and VUDU

When an explosion in the Astraeus lab accidentally sends Andy to Titan the team must devise a plan to save him before it's too late! Also available on Xfinity, Amazon Instant Video, iTunes and VUDU

The town gets a workout as the Astraeus candidates strive to meet the mission's physical fitness requirements. Jo Lupo (Erica Cerra) is running boot camp, Zane (Niall Matter) and Grace (Tembi Locke) are pushing themselves to the limit, and Fargo (Neil Grayston) is stunned to find that even he and Dr. Holly Marten (Felicia Day) have to qualify for the mission physically. He is even more stunned to learn that Holly has been spending time with his nemesis, Dr. Parrish (Wil Wheaton). Happy to sit out the exercise craze, Carter (Colin Ferguson) is excited to investigate what he thinks is an ordinary bank robbery. He's quickly reminded that Eureka is anything but ordinary after he finds that the entire bank is missing, with dangerously volatile antimatter stored inside. When Carter finds the bank, it's 50 feet up in the air with more of the town rising by the minute. He and Henry (Joe Morton) race to solve the microgravity epidemic before what went up comes down - fast - in an explosion that will obliterate the town. Meanwhile, Allison (Salli Richardson-Whitfield) is overwhelmed with work. When she starts to experience alarming incidents of memory loss, she first blames stress, but finally gives herself a comprehensive brain scan. What Allison finds is deeply disturbing, but what she tells Carter is more shocking still. Also available on iTunes and VUDU

The Astraeus mission crew will be small, so Eureka's scientists are in a fevered competition to get on board. Fargo (Neil Grayston) and Dr. Holly Marten (Felicia Day) share the daunting task of evaluating the eager candidates -- and a growing attraction to each other. While Allison (Salli Richardson-Whitfield) insists that she does not want a place on the trip to Titan, a discovery from her other-timeline self brings this into question. Among the competing scientists, including the curiously familiar Dr. Lee (Stan Lee), Dr. Parrish (Wil Wheaton) is especially determined to be selected. When Fargo cuts him in the first round, Parrish is livid. Will he seek revenge? To ensure safety on the Astraeus mission as well as in Eureka, Zane (Niall Matter) has engineered a cutting-edge security system, called P.A.L.s -- Predictive Algorithm Lenses. These contacts give anyone wearing them an immediate readout of the level of risk for whatever, or whomever, they are looking at. While Fargo and Jo (Erica Cerra) love the devices, Carter (Colin Ferguson) is less trusting but agrees to test a pair. The P.A.L.s offer a helpful peek into the future, but what Carter and Jo don't see might lead to a deadly meltdown. Also available on iTunes and VUDU