In these scenes from a 1967 episode of the classic American sci-fi series Star Trek, Captain Kirk is held prisoner and Spock mounts a daring rescue.

Captain Kirk finds himself in Olympus, and face to face with the Greek god, Apollo... or so it would seem! But what might a classical deity want from the stunned and bemused Star Trek crew?

Captain Kirk’s crew has stolen a cloaking device from the Romulans, but when they attempt to hold the Romulan Commander hostage, they find out just how dangerous she is.

Over the course of human history, thousands of languages have developed from what was once a much smaller number. How did we end up with so many? And how do we keep track of them all? Alex Gendler explains how linguists group languages into language families, demonstrating how these linguistic trees give us crucial insights into the past.

"You're a fishmonger!" By taking a closer look at Shakespeare's words, and particularly his insults, we can see why he is known as a master playwright whose works appeal to audiences all over the world.

When we look at insults used in Shakespeare's play "Romeo and Juliet," we get a new insight into dynamics between the characters and how they relate to the development of the story.

When hit US sitcom That '70s Show finally ended its long and successful run, the actors came together to reminisce and relive the good times and best moments. How did it all get started? Did any of them ever dream that the show would be so popular?

Looking back at the pilot episode from all those years ago, the actors explain why the show made audiences of different ages laugh, and cringe at their own acting skills.

Eric finds that the road to happiness is not without a few bumps as his and Donna's teenage romance becomes an adult relationship.

The cast hadn’t met before filming the show, but there was a good chemistry between them right from the start. When they got together and were having a good time, the viewers knew it, and very soon were also having a good time watching.

Some memorable scenes came when That '70s Show pioneered new camera techniques. They were the first show using “three sixty degree” scenes, bringing each character into sharper focus, often with hilarious results.

The cast recall their favorite moments of a show that didn’t mind pushing the boundaries. A cartoon episode was made, and the “three-sixty” scenes were a huge hit — to the extent that they often weren't even related to the storyline.

The basement film set and its contents have taken a battering over the years of filming. Now that the show is coming to an end, the actors are dividing up the props, keen to take a memento from the studio that has become a home away from home.

The whole cast got to break out of their routine and enjoy roles in the many fantasy sequences that were a feature of the show. Often based on iconic stage and screen performances, some actors were able to live out their personal acting fantasies and play parts they had always dreamed of.

Things on set didn’t always go as planned. Sometimes the young actors got the giggles, and sometimes they even got hurt, but each found their own way of dealing with the unexpected. Luckily, the director of the show was extremely patient with them.