Electrified: The Guitar Revolution (Full Episode)

Plug-in for a high-wattage history lesson on the instrument that changed the look, the sound and the volume of music forever.

Aerial America: Hawaii (Full Episode)

Born of fire and water, the dramatic landscapes of Hawaii are best seen from the air. Soar above the sand, surf and lava on this breathtaking journey across all six major Hawaiian islands.

Thunderheads (Full Episode)

Embark on a thrilling ride with pilots and scientists as they attempt to catch the perfect storm. Armed with seven planes, a ship and the best gadgets money can buy, this daring and intrepid group will try to shed light on the issue of climate change.

A Woman Among Wolves (Full Episode)

One woman's passion for wolves leads her on a quest to study the animals in the wilds of Canada. Collecting field data, hair, DNA samples and other scientific evidence, Gudrun Pflueger has spent six years in search of the coast wolves of British Columbia. This is her exciting story of the five-week expedition, set to become Gudrun's most unexpectedly memorable encounter with wolves ever.

SciQ: Underwater Living (Full Episode)

Dive in and feed your brain as our hosts explore the possibility of living, working and playing underwater. From hockey to scuba diving, if you've got the lungs we've got the ultimate underwater experience.

Zoo Vets: Tails, Teeth and Snouts (Full Episode)

Think a root canal is tough? Try performing one on a tiger! Join the veterinarians at the Smithsonian's National Zoo for the ultimate medical challenge, giving specialized care to animals representing 500 unique anatomical systems.

Stories from the Vaults: Let's Eat! (Full Episode)

Tom explores man's sincerest love of all ... the love of food. First, he tries his hand at cooking Native American dishes with the executive chef of Mitsitam Cafe. He then visits the National Museum of American History to learn the origins of the American coffee break. Finally, he stops by the National Museum of Dentistry, where he learns how the food we adore has a less than loving relationship with our teeth.

America Wild and Wacky (Full Episode)

Americans' competitive spirit reveals itself in some wacky ways, like the Nederland, Colorado coffin race dedicated to a dead guy that brings new meaning to the term "frozen stiff," or the Lake Geneva, Wisconsin National Snow Sculpting Competition where snowmen go high-end while temperatures hit record lows. Then there's the Kinetic Sculpture Race in Baltimore, Maryland, where crazy contraptions speed across a gritty land and sea racecourse. And don't forget Spamarama, an Austin, Texas festival that centers around... what else, SPAM!

The Vampire Princess (Full Episode)

Picture a spectacular vampire attack at the tomb of an Austrian princess. A scene from Stephenie Meyer's "Twilight" series? No. It's the deleted opening to Bram Stoker's "Dracula," a horror classic that many experts believe was actually based on a woman. Archaeologists, historians and forensic scientists revisit the days of vampire hysteria in 18th century Czech Republic, and re-open the unholy grave of dark princess Eleonore von Schwarzenberg. They uncover her story, once buried and long forgotten, now raised from the dead.

Carrier at War: The USS Enterprise (Full Episode)

Personal stories and footage from missions reveal the awesome power of "the most dangerous place on the planet," a wartime aircraft carrier. An insider's peek at life aboard the USS Enterprise and the crew returning from heavy-action duty in Afghanistan and Iraq to be reunited with their loved ones.

Remembering Vietnam: The Wall at 25 (Full Episode)

In 1979 a Vietnam vet named Jan Scruggs had a vision to create a memorial to the 2.7 million Americans who served in the nation's longest and most controversial war. Despite initial cynicism and opposition, the Memorial was built in 1982. The black granite wall, designed by Yale undergraduate Maya Lin, was called a black gash of shame and stirred up so much controversy that the whole project was almost stopped. Every year, millions of visitors visit the iconic wall, some to pay tribute and others to heal old wounds.

Making The Monkees (Full Episode)

In 1966, two aspiring filmmakers cast four young actors in a low budget TV series about a fictional band. By 1967, they were the biggest pop music act in the world with record sales that topped "The Beatles" and Elvis Presley combined.

Street Monkeys: Girl Gangs (Full Episode)

Trespassers beware! The women of the Pani Troop stick together and they're protective of their little piece of paradise.

The Real Story: The Silence of the Lambs (Full Episode)

Meet the deranged serial killers and the determined FBI agents who inspired one of Hollywood's most terrifying thrillers and gave Anthony Hopkins and Jodie Foster the roles of a lifetime. We go behind the scenes at the FBI's Behavioral Science Unit and meet the profilers who became the basis for Harris's characters, and uncover the details of real-life murderers Ed Gein, Ted Bundy and others.