Friends to Without a Trace
7 connections
Friends
Caroline In The City
Caroline in the City's Caroline wished The Single Guy's Jonathan good luck
Frasier
Fraiser's Niles and Daphne read Caroline in the City's comic strip.
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