Doctor Who

Ba'al travels back in time and prevents the Stargate program from being started. SG-1 must somehow restore history.

Londo Mollari, the Centauri Emperor, recounts the initial contact between the Humans and Minbari, which resulted in a major incident and subsequent war, for an eager pair of youngsters wanting a story about love and conflict.

Office employee Barry Thomas is caught in a "time bounce" caused by a glitch in the company's secret project. Now the same day occurs again and again - and Barry's the only one who can do anything about it, including saving the life of beautiful research assistant Lisa Fredericks.

The fate of the galaxy rests in the hands of bitter rivals. One, James Kirk, is a delinquent, thrill-seeking Iowa farm boy. The other, Spock, a Vulcan, was raised in a logic-based society that rejects all emotion. As fiery instinct clashes with calm reason, their unlikely but powerful partnership is the only thing capable of leading their crew through unimaginable danger, boldly going where no one has gone before. The human adventure has begun again.

Jamie and Lucy have an encounter with what appears to be a pair of ghost children. But these spooky kids, Sara and Georgie, aren’t actually ghosts. They’ve travelled forwards in time to seek help, believing they’re going to be murdered by the wicked Mr and Mrs Wickens. And Lucy and Jamie’s strange visitor seems to be the key to it all. With his help, they must travel back to 1821 to save Sara and Georgie and redeem their remorseful new friend – The Amazing Mr Blunden.

After accidentally crash-landing in 2022, time-traveling fighter pilot Adam Reed teams up with his 12-year-old self on a mission to save the future.

Hoping to alter the events of the past, a 19th-century inventor instead travels 800,000 years into the future, where he finds mankind divided into two warring races.

This Lost World is a splendid BBC TV dramatisation of Sir Arthur Conan Doyle's famous adventure story. Bob Hoskins makes an unusually genial Professor Challenger, far less of a bully than Doyle's character, but his slightly stereotyped companions are nicely filled out by a solid cast. James Fox is Challenger's more timid but still covertly adventurous rival, Tom Ward is the moustachioed big game hunter who faces an Allosaurus with an elephant gun, and Matthew Rhys plays the tagalong reporter hoping to impress his faithless fiancée.

The Doctor and Clara face their Last Christmas. Trapped on an Arctic base, under attack from terrifying creatures, who are you going to call? Santa Claus!