FlashForward to The D.A.
6 connections
FlashForward
Lost
Oceanic is mentioned in a billboard on FlashForward, mentioning it's perfect safety record
Diagnosis: Murder
The airplane that crashed and strand the cast of Lost was Oceanic Airlines Flight 815 also featured on Diagnosis Murder.
Matlock
Diagnosis Murder's Dr Mark Sloan was defended by Matlock when Sloan was accused of murder
Emergency!
Both feature the fictional Trans Global Airlines
Adam-12
Emergency! had a crossover with Adam-12 to find a boy who ran away from the hospital.
The D.A.
Adam-12 had a two part crossover with The D.A.