Frasier to Without a Trace
5 connections
Frasier
Cheers
Cheers spun-off Frasier
St. Elsewhere
St Elsewhere's Westphall, Craig and Auschlander visited Cheers' bar
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
Without a Trace
Multiple episodes feature Hudson University, the Alma Mater of multiple L&O characters