Andy Barker, P.I. to Frasier
4 connections
Andy Barker, P.I.
Buffy the Vampire Slayer
Guy Helverson from Andy Barker, P.I. owns a Doublemeat Enterprise from the Doublemeat Palace episode of Buffy
Angel
Angel was a spin-off of Buffy the Vampire Slayer
The John Larroquette Show
John Larroquette Show referenced Yoyodyne. Yoyodyne was also a client of Angel's Wolfram & Hart.
Frasier
John Larroquette Show's John Hemingway called into Fraiser's show