Star Trek to Without a Trace
7 connections
Star Trek
Red Dwarf
A Klingon Bird of Prey was seen in a spaceship graveyard on Red Dwarf
Angel
In the Red Dwarf episode "Psirens", the crew of the Red Dwarf come across a space ship graveyard which includes a Weyland-Utani ship, connecting it with Angel.
Buffy the Vampire Slayer
Angel was a spin-off of Buffy the Vampire Slayer.
The X-Files
The X-Files? Cigarette Smoking Man and Buffy the Vampire Slayer's Spike both smoked Morley cigarettes.
Homicide: Life On The Street
Homicide's John Munch questioned The X-Files' The Lone Gunmen.
Law & Order
Law and Order and Homicide crossed over on four episodes
Without a Trace
Multiple episodes feature Hudson University, the Alma Mater of multiple L&O characters