Sliders
Overview:
In his basement in San Francisco, boy-genius Quinn Mallory unlocks the doorway to an infinite number of Earths. During a test run, Quinn invites co-worker Wade Welles and his teacher Professor Maximillian Arturo to see his new invention. But an increase in power and an early departure leave all three, plus a washed-up soul singer named Rembrandt "Crying Man" Brown, lost in a parallel world. Now they must "slide" from world to world, not only adapting to their changing surroundings, but also trying to get back to their world. Will they ever make it home?
Recommendations for you
Farscape
A freak accident during an experimental space mission catapults Astronaut John Crichton across a thousand galaxies to an alien battlefield.
Stargate SG-1
The story of Stargate SG-1 begins about a year after the events of the feature film, when the United States government learns that an ancient alien device called the Stargate can access a network of such devices on a multitude of planets. SG-1 is an elite Air Force special operations team, one of more than two dozen teams from Earth who explore the galaxy and defend against alien threats such as the Goa'uld, Replicators, and the Ori.
Nowhere Boys
Four teenage boys get lost in the forest and discover, when they return home, that they are in an alternate world identical to theirs except for one startling difference - they were never born.
Falling Skies
Falling Skies opens in the chaotic aftermath of an alien attack that has left most of the world completely incapacitated. In the six months since the initial invasion, the few survivors have banded together outside major cities to begin the difficult task of fighting back. Each day is a test of survival as citizen soldiers work to protect the people in their care while also engaging in an insurgency campaign against the occupying alien force.
Earth: Final Conflict
Years ago, the Taelons came to Earth, offering friendship and technology to humanity. But there are those who believe the Taelons have more sinister motives.
Doctor Who
The Doctor is a Time Lord: a 900 year old alien with 2 hearts, part of a gifted civilization who mastered time travel. The Doctor saves planets for a living—more of a hobby actually, and the Doctor's very, very good at it.
Doctor Who
The adventures of The Doctor, a time-traveling humanoid alien known as a Time Lord. He explores the universe in his TARDIS, a sentient time-traveling spaceship. Its exterior appears as a blue British police box, which was a common sight in Britain in 1963 when the series first aired. Along with a succession of companions, The Doctor faces a variety of foes while working to save civilizations, help ordinary people, and right many wrongs.
Star Trek: Deep Space Nine
At Deep Space Nine, a space station located next to a wormhole in the vicinity of the liberated planet of Bajor, Commander Sisko and crew welcome alien visitors, root out evildoers and solve all types of unexpected problems that come their way.
Ben 10
When 10-year-old Ben Tennyson discovers a mysterious device, he gains the power to change into ten different alien heroes, each with uniquely awesome powers. With such abilities at his disposal, Ben realizes a greater responsibility to help others and stop evildoers, but that doesn't mean he's above a little superpowered mischief now and then.
The Invaders
The Invaders, alien beings from a dying planet. Their destination: the Earth. Their purpose: to make it their world. David Vincent has seen them, for him it began one lost night on a lonely country road, looking for a shortcut that he never found. It began with a closed deserted diner, and a man too long without sleep to continue his journey. It began with the landing of a craft from another galaxy. Now, David Vincent knows that the Invaders are here, that they have taken human form. Somehow he must convince a disbelieving world that the nightmare has already begun.
Dark Skies
Dark Skies is an American UFO conspiracy theory-based sci-fi television series that aired from the 1996 to 1997 season for 18 episodes, plus a two-hour pilot episode. The success of The X-Files on Fox proved there was an audience for science fiction shows, resulting in NBC commissioning this proposed competitor following a pitch from producers Bryce Zabel and Brent Friedman. The series debuted September 21, 1996 on NBC, and was later rerun by the Sci-Fi Channel. Its tagline was "History as we know it is a lie."
Spellbinder
A group of teenagers go on a school camp in the Blue Mountains in Australia. While at the camp, Paul Reynolds accidentally goes into a parallel universe. This other world is inhabited by a more hierarchic and technologically different society, ruled by a group of people known as Spellbinders.
The Twilight Zone
An anthology series containing drama, psychological thriller, fantasy, science fiction, suspense, and/or horror, often concluding with a macabre or unexpected twist.
Doctor Who
The Doctor and his companion travel across time and space encountering incredible friends and foes.
Primeval
When strange anomalies start to appear all over England, Professor Cutter and his team must track down and capture all sorts of dangerous prehistoric creatures from Earth's distant past and near future.
Quantum Leap
Theorizing that one could time travel within his own lifetime, Dr. Sam Beckett stepped into the Quantum Leap accelerator and vanished... He woke to find himself trapped in the past, facing mirror images that were not his own and driven by an unknown force to change history for the better. His only guide on this journey is Al, an observer from his own time, who appears in the form of a hologram that only Sam can see and hear. And so Dr. Beckett finds himself leaping from life to life, striving to put right what once went wrong and hoping each time that his next leap will be the leap home.
Men in Black: The Series
A secret government organization made up of men provide intergalactic immigration services for Earth-bound aliens.
Sonic Prime
When an explosive battle with Dr. Eggman shatters the universe, Sonic races through parallel dimensions to reconnect with his friends and save the world.
Ben 10: Alien Force
Five years later, 15-year-old Ben Tennyson chooses to once again put on the Omnitrix and discovers that it has recalibrated and can now transform him into 10 brand new aliens. Joined by his super-powered cousin Gwen Tennyson and his equally powerful former enemy Kevin Levin, Ben is on a mission to find his missing Grandpa Max. In order to save his Grandpa, Ben must defeat the evil DNAliens, a powerful alien race intent on destroying the galaxy, starting with planet Earth.
Monsuno
Monsuno hurtled through space before man existed. Upon burning through the planet's atmosphere and crashing to Earth, they brought chaos and the extinction of the dinosaurs. Over millions of years, the Monsuno essence slowly disappeared as it dropped deeper and deeper below the planet’s surface, until a scientist named Jeredy Suno at the secret government agency found a way to bring them back and control. He took his research and vanished, but not before he left his only son a special gift.