ALF to Castle
5 connections
ALF
The Bob Newhart Show
The Bob Newhart Show's Elliot Carlin visited the Tanners & ALF on ALF.
St. Elsewhere
The Bob Newhart Show's Elliot Carlin visited the psych ward at St Elsewhere's St Eligius Hospital.
Homicide: Life On The Street
St Elsewhere's Dr Turner was investigated for murder by Homicide's Pembleton and Bayliss.
Law & Order
Law and Order and Homicide crossed over on four episodes
Castle
Hudson University from L&O also appears as the home of various victims and crimes in Castle,