FlashForward to Trapper John, M.D.
8 connections
FlashForward
Lost
Oceanic is mentioned in a billboard on FlashForward, mentioning it's perfect safety record
Veronica Mars
In an episode of Veronica Mars, Veronica's fortune cookie had the numbers that won Hurley from Lost the lottery.
The X-Files
The mugshot of Malcolm T Wiggins from the X-Files episode "Titonus" appears on the wall of a police interrogation room in the Veronica Mars episode "Leave it to Beaver." Also the fictional car rental company Lariat where Mulder & Scully always rented their cars was featured prominently on the Veronica Mars episode "Rat Saw God."
Homicide: Life On The Street
Homicide's John Munch questioned The X-Files' The Lone Gunmen.
Oz
Homicide's detectives watched Oz's Miss Sally on TV.
St. Elsewhere
St Elsewhere's hospital management company Weigert (was Ecumena) took over Oz's hospital.
M*A*S*H
St Elsewhere's Mark Craig talked about M*A*S*H's BJ Hunnicut.
Trapper John, M.D.
MASH spun off Trapper John, M.D.