Silver Spoons to The Green Hornet

Diff'rent Strokes' Arnold did a story for his school newspaper on Silver Spoons' Ricky.

Hello Larry's Larry Alder crossed over onto Diff'rent Strokes for 3 different 2-part episodes

Hello Larry's characters were mentioned on Hi Honey, I'm Home!.

Hi Honey, I'm Home!'s Lloyd was friends with Mister Ed

The Beverly Hillibillies? Granny appeared on an episode of Mister Ed (see below for more on The Beverly

Petticoat Junction was a spin-off of The Beverly Hillbillies. Petticoat Junction spun off Green Acres. All three shows crossed over numerous times.

Green Acres' Oliver Wendell Douglas was briefly a prisoner in Stalag 13 where he contacted Hogan's Heroes' Colonel Hogan

Hogan's Heroes Colonel Klink has an explicable but existent cameo in an episode of the 1960s live action Batman

Green Hornet's Green Hornet and Kato appeared on Batman twice,