Zachary Levi, Yvonne Strahovski, Adam Baldwin
Season: 1
Network: NBC

Story: After much of the NSA's top secret database is downloaded into his brain, mild-mannered electronics store clerk Chuck finds himself secretly going on covert ops missions with CIA & NSA handlers to stop various bad guys.

Douglas Henshall, James Murray, Hannah Spearitt
Seasons: 1-2
Network: ITV

Story: A team of scientists investigate time anomalies and must deal with the prehistoric and future creatures that travel through to the present. Not helping is that the team leader's ex-wife has an agenda all her own.

Jared Padalecki, Jensen Ackles, Joe Morgan
Seasons: 1-3
Network: The CW

Story: Two brothers witness their mother's paranormal death as children. One manages to move on and go to college, but is pulled back in to the job and together they hunt down all manner of mysteries and monsters.