Dark Skies

Political aide John Loengard has a run-in with extraterrestrial forces, and ends up tracking a body-snatching alien invasion as part of the super-secret agency Majestic 12. This series was launched at the height of the paranormal mania created by The X-Files. Notable for its 1960s setting and a pre-Star Trek: Voyager role for Jeri Ryan as a Russian sexpot agent. Cancelled after one season.

Tropes used in Dark Skies include:

• Alien Abduction
• All Theories Are True: Especially UFOlogy and other '60s Conspiracy Theory lore.
• Bad Boss: Bach, very much so.
• Beethoven Was an Alien Spy: The events of the show are shown to be interconnected with historical events.
• Cliff Hanger: The series-ending kind.
• Dueling Shows: with The X-Files... for all of one season.
• ET Gave Us Wi-Fi: The show, and the conspiracy folklore it's based on, supposes that modern technology was invented by reverse-engineering material from the famous Roswell incident.
• Exposed Extraterrestrials
• Flying Saucer
• Government Conspiracy: Majestic
• The Greys: a (presumably) peaceful race that was taken over by the parasitic Hive. They and their technology are used by the Hive to menace Earth.
• Historical Domain Character: Many, many, from The Beatles and Jim Morrison, to Carl Sagan and Colin Powell.
• Hive Mind: The appropriately named "Hive" aliens have this.
• Roswell That Ends Well: They landed. They met with the President. They told him to surrender. He refused. They shot the ship down.
• Who Shot JFK?
• The Virus: The Hive acts like this.