Norm to Three's A Crowd
4 connections
Norm
The Drew Carey Show
Norm and The Drew Carey Show crossed over.
Ellen
The Drew Carey Show did a cross over with Coach and characters from Ellen were on the same episode
The Ropers
Stanley Roper's character was spun off from Three's Company to The Ropers
Three's A Crowd
The Ropers and Three's A Crowd both originated from Three's Company