Degrassi: The Next Generation to Mayberry R.F.D.

Degrassi: TNG was a continuation of Degrassi High years later

Degrassi High was a continuation of Degrassi Junior High

St Elsewhere's Dr Wesphall is paged twice on Degrassi Junior High. In the episode "Nothing to Fear" LD's father is in the hospital and Dr. Westphall is paged on the hospital intercom. Later, in the episode "Sealed with a Kiss", "Dr Donald Westphall" is paged, loud and clear, over the hospital intercom when Heather & Erica go in for a mono test.

St Elsewhere's Westphall, Craig and Auschlander visited Cheers' bar

Cheers spun-off Frasier

Fraiser's Niles and Daphne read Caroline in the City's comic strip.

Caroline in the City's Caroline wished The Single Guy's Jonathan good luck

Friends was affected by the blackout created by Mad About You's Jamie on Blackout Thursday.

Mad About You's Paul did a documentary narrated by The Dick Van Dyke Show's Alan Brady.

The Dick Van Dyke Shows' Buddy appeared in an episode of The Danny Thomas Show

Danny Thomas Show spun off The Andy Griffith Show after Danny Williams got arrested in Mayberry.

was a spin off of The Andy Griffith Show