Earth: Final Conflict (1997)

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."

A secret, high-technology international agency called SHADO defends Earth from alien invaders.

Threshold was a science fiction drama television series that first aired on CBS in September 2005. Produced by Brannon Braga, David S. Goyer and David Heyman, the series focuses on a secret government project investigating the first contact with an extraterrestrial species.

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.

In an era filled with danger, deception and intrigue, Cassian Andor will discover the difference he can make in the struggle against the tyrannical Galactic Empire. He embarks on a path that is destined to turn him into a rebel hero.

Set in the years 2063–2064, the show focuses on the "Wildcards", members of the United States Marine Corps Space Aviator Cavalry, 58th Squadron. They are stationed on the space carrier USS Saratoga, and act as infantry and pilots of SA-43 Endo/Exo-Atmospheric Attack Jet fighters.

After fully recovering from her near fatal bout of bionic rejection, Jaime Sommers, the first female cyborg, is assigned to spy missions of her own.

A secret government organization made up of men provide intergalactic immigration services for Earth-bound aliens.

Two federal agents from two different continents, and two different mindsets, must work together to investigate when wreckage from a destroyed alien spacecraft has mysterious effects on humankind.

In the year 2517, after the arrival of humans in a new star system, follow the adventures of the renegade crew of Serenity, a "Firefly-class" spaceship.