When the unexpected happened, it was sometimes best to stay in character and try to get a bigger laugh. In particular, Ashton Kutcher, who played Kelso on the show, was willing to endure some painful knocks if it made the audience happy.

On set, the decor had to be just right in reflecting the decade of the 1970s. Behind the scenes, detail was also important when props were in use. We meet the man who coordinated many of the stunts and gags, and then catch up with some of the big-name guest stars who graced the show over the years.

Over the years, the show was blessed with many guest star appearances. Hollywood favorites like Bruce Willis, Lindsey Lohan, and Brooke Shields had a lot of fun working on set with the vibrant, enthusiastic cast.

Wilmer’s dressing room was closest to the studio and it served as a comfortable place for the cast members to hang out in between scenes. For Wilmer, it holds memories from the eight years of the show’s run, with his photo board and walls signed by cast and visitors alike.

When the show began, Debra Jo didn’t like her character Kitty’s hair, but changing her look was never going to be simple, and had to be written into the plot. One small fire later, and Kitty got a different hairdo, along with her husband’s attention.

All good things must come to an end, and for the cast, this really is their final goodbye. In this video, you can see the read-through of the last script and final filming of their last episode together. There’s a genuine warmth between the actors, and some tears, but all are thankful for the good times, friendship, and camaraderie the show has given them through the years.

What does the Holocaust have to do with us, anyway? In part one, Roderick Miller, the chair of the nonprofit organization Tracing the Past, gives a talk at TEDxVienna about the Holocaust and contemporary Europeans' perception of the space they live in.

What does the Holocaust have to do with us, anyway? In part two, Roderick Miller, the chair of the nonprofit organization Tracing the Past, gives a talk at TEDxVienna about the Holocaust and contemporary Europeans' perception of the space they live in.

What does the Holocaust have to do with us, anyway? In part three, Roderick Miller, the chair of the nonprofit organization Tracing the Past, gives a talk at TEDxVienna about the Holocaust and contemporary Europeans' perception of the space they live in.

What does the Holocaust have to do with us, anyway? In part four, Roderick Miller, the chair of the nonprofit organization Tracing the Past, gives a talk at TEDxVienna about the Holocaust and contemporary Europeans' perception of the space they live in.

Taylor Swift discusses her song "Out of the Woods" and why it is representative of the goal she had for her album 1989.

Barbara is a retired French teacher who happens to be Sigrid's sister. The two have a conversation about language in general and about how Barbara became interested in the career path she followed.

Barbara talks about her studies and other experiences that led to her career as a French teacher. Immersion played a crucial role for both sisters in learning new languages.

Barbara talks about the different jobs she had teaching both French and English. Later, she also had a job supervising teachers of foreign languages, though she notes that these are now referred to as "world languages."

Barbara talks about a mistake she made as a language supervisor. Sigrid talks about how people in the U.S. speak English even when they have a very strong accent and it's OK. They both agree that learning with a native speaker of the language is the best way to learn.