Chuck to NCIS: LA
5 connections
Chuck
Lost
Chuck mentions that Oceanic 815 was shot down.
LAX
You can see advertisments for Oceanic Airlines in a LAX terminal, which is the airline of the plane that crashed on Lost
JAG
JAG and LAX reference the fictional airline Oceanic
NCIS
NCIS was a spinoff of JAG
NCIS: LA
NCIS: LA was a spinoff of NCIS