In the House to Maude
4 connections
In the House
The Fresh Prince of Bel Air
In the House's Tiffany's boyfriend cheats on her with The Fresh Prince of Bel Air's Ashley. Also Carlton and In the House's Marion are friends
The Jeffersons
The Jefferson family appeared on the final episode of Fresh Prince where they purchased the house from the Banks family.
All in the Family
The Jeffersons' George Jefferson was the second All in the Family supporting character to spinoff onto his own show.
Maude
The first All in the Family spinoff character was Maude. Maude was Edith Bunker's cousin.