Two archaeologists find a portal to another time inside a cave

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

SG-1 searches for an ancient weapon which could help them defeat the Ori, and discover it may be in the Ori's own home galaxy. As the Ori prepare to send ships through to the Milky Way to attack Earth, SG-1 travels to the Ori galaxy aboard the Odyssey. The International Oversight committee have their own plans and SG-1 finds themselves in a distant galaxy fighting two powerful enemies.

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.

A Victorian Englishman travels to the far future and finds that humanity has divided into two hostile species.

Bill and Ted are high school buddies starting a band. They are also about to fail their history class—which means Ted would be sent to military school—but receive help from Rufus, a traveller from a future where their band is the foundation for a perfect society. With the use of Rufus' time machine, Bill and Ted travel to various points in history, returning with important figures to help them complete their final history presentation.

The misadventures of two time-travelling slackers as they travel into the distant past and future.

Two fledgling inventors discover a complex method to manipulate reality. At first, they successfully game the stock market with it, but the consequences of the invention start to catch up with them.

Primer Amor, A 1000 X Hora was a Mexican telenovela, which was produced by and broadcast on Televisa in 2000 and in Brazil in 2003. It is a remake of another Televisa telenovela titled Quinceañera. The 2 main characters were played by teen heart throb Kuno Becker and young Anahí. Both are also known for their musical talents. This teen-oriented soap was one of the highest-rated in its time-slot.

When a rare phenomenon gives police officer John Sullivan the chance to speak to his father, 30 years in the past, he takes the opportunity to prevent his dad's tragic death. After his actions inadvertently give rise to a series of brutal murders he and his father must find a way to fix the consequences of altering time.

Detective Raimy Sullivan is stunned when a voice suddenly crackles through her father’s old, long-broken ham radio – it’s Frank Sullivan, somehow transmitting over the airwaves and through the decades from 1996. Separated by twenty years, father and daughter have reunited on a frequency only they can hear, but can they rewrite the story of their lives without risking everyone they love?