Neil Patrick Harris, Padma Lakshmi, Chris Stapleton; Ellen's 12 Days of Giveaways Day 11

The eight-episode fast-paced, nostalgia-fueled series will take viewers on a thrilling ride through America's past. 

Amateur sewers take on challenges as they compete to be named Britain's best home sewer.

Big Brother follows a group of people living together in a house outfitted with dozens of high-definition cameras and microphones recording their every move, 24 hours a day. Each week, the Houseguests will vote someone out of the house. At the end, the last remaining Houseguest will receive the grand prize of $500,000.

Some of the most amazing, eye-opening and downright scary paranormal videos from around the world are featured as a panel of experts break down the footage and analyze what exactly the eyewitnesses captured.

What would happen to planet earth if the human race were to suddenly disappear forever? Would ecosystems thrive? What remnants of our industrialized world would survive? What would crumble fastest? From the ruins of ancient civilizations to present day cities devastated by natural disasters, history gives us clues to these questions and many more in the visually stunning and thought-provoking special, Life After People.