Officials race against time to counteract geological disturbances that threaten the planet.

(Originally Aired: Saturday Aug 13, 2011)

A volcanic eruption devastates Yellowstone National Park.

(Originally Aired: July 16, 2011)

The return of democracy to the fleet brings with it both hardball politics and potentially deadly intrigue.

(Originally Aired: Friday Jul 29, 2005)

Matt Smith reviews his best moments; celebrity fans share their favorite moments.

(Originally Aired: Saturday Aug 13, 2011)

Highlights from the season.

(Originally Aired: Saturday Aug 13, 2011)

Mom tries to keep the peace while stuck in a traffic jam; Dad waits outside the headmaster’s office.

(Originally Aired: Thursday Aug 30, 2007)

The boys and Grandma think that Mum’s new curtains are horrible.

(Originally Aired: Friday Mar 11, 2011)