Becker to Benson

The King Of Queens' Doug Heffernan visited Everybody Loves Raymond's Ray at Becker's Dr. Becker's office while Cosby's Hilton Lucas was in the waiting room

The Nanny's Fran Fine and Everybody Loves Raymond's Raymond Barone went to high school together

High Society and The Nanny crossovered during a network crossover theme night

High Society and Murphy Brown crossed over during a network crossover night

The Bob Newhart Show's Carol was Murphy Brown's secretary for an episode.

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

St Elsewhere's Dr Turner was investigated for murder by Homicide's Pembleton and Bayliss.

Homicide's John Munch questioned The X-Files' The Lone Gunmen.

The mugshot of Malcolm T Wiggins from the X-Files episode "Titonus" appears on the wall of a police interrogation room in the Veronica Mars episode "Leave it to Beaver." Also the fictional car rental company Lariat where Mulder & Scully always rented their cars was featured prominently on the Veronica Mars episode "Rat Saw God."

In an episode of Veronica Mars, Veronica's fortune cookie had the numbers that won Hurley from Lost the lottery.

The airplane that crashed and strand the cast of Lost was Oceanic Airlines Flight 815 also featured on Diagnosis Murder.

Diagnosis Murder's Doctor Jesse Travis's father is a spy that someone is trying to kill. One of the possible suspects is the original Mission: Impossible's Cinnamon Carter.

George Jefferson gets help from Barney Collier from Mission Impossible

The Jeffersons' George Jefferson was the second All in the Family supporting character to spinoff onto his own show.

The first All in the Family spinoff character was Maude. Maude was Edith Bunker's cousin.

Hanging In (and Maude's) Maggie Gallagher crossed over onto Soap for 10 episode

Maggie Gallagher from Hanging In crossed over onto Soap

Soap's Benson DuBois spunoff on to his own show, Benson