Gideon's Crossing to Lab Rats

The Practice's Ellenor Frutt visited Gideon's Crossing's Dr Gideon about pregnancy complications

The Practice's Ellenor Frutt and Boston Public's

Kevin Riley were old friends and Kevin Riley was represented by The Practice's law firm.

The Bob Newhart Show's Elliot Carlin visited the psych ward at St Elsewhere's St Eligius Hospital.

The Bob Newhart Show's Bob Hartley woke up after dreaming the entire series Newhart during Newhart's finale.

Newhart's Larry, Darryl and Darryl squatted in Coach's Hayden and Christine's home

On a network crossover night, The Drew Carey Show, Grace Under Fire's Grace Kelly, Coach's Luther and Ellen's Paige and Spence all show up. Finally on Ellen, Paige and Spence run into Grace Kelly and Drew Carey

The Drew Carey Show's Mimi appeared in an episode of The Hughleys

The Hughleys crossed over with The Parkers.

The Parkers was a spinoff of Moesha

Hakeem and Niecy from Moesha went to the prom with Cher and Sean from Clueless.

Sabrina from Sabrina the Teenage Witch visited Cher from Clueless in the episode "Mr. Wright."

Sabrina the Teenage Witch also crossed over with Boy Meets World on several other occasions.

Boy Meets World was continued decades later in Girl Meets World

Austin and Ally appear on an episode of Girl Meets World. Bringing the Disney Channel Live Action Universe into the Westphall Universe

Jessie and Austin & Ally crossed over

Mr. Moseby from The Suite Life was on Jessie

The Suite LIfe on Deck did a cross over with Wizards of Waverly Place

A poster for Tears of Blood, a band from Wizards of Waverly Place, is seen in the background of the episode of A.N.T. Farm

Revenge of the Hemogoblin from ANT Farm appears on Kickin' It

Kickin' It and Lab Rats crossed over during the Red Skies Crossover event