Benson to L.A. Law
22 connections
Benson
Soap
Soap's Benson DuBois spunoff on to his own show, Benson
Hanging In
Maggie Gallagher from Hanging In crossed over onto Soap
Maude
Hanging In (and Maude's) Maggie Gallagher crossed over onto Soap for 10 episode
All in the Family
The first All in the Family spinoff character was Maude. Maude was Edith Bunker's cousin.
The Jeffersons
The Jeffersons' George Jefferson was the second All in the Family supporting character to spinoff onto his own show.
Mission: Impossible (1966)
George Jefferson gets help from Barney Collier from Mission Impossible
Mission: Impossible (1988)
Mission: Impossible was continued 22 years later
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.
Lost
The airplane that crashed and strand the cast of Lost was Oceanic Airlines Flight 815 also featured on Diagnosis Murder.
Veronica Mars
In an episode of Veronica Mars, Veronica's fortune cookie had the numbers that won Hurley from Lost the lottery.
The X-Files
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."
Homicide: Life On The Street
Homicide's John Munch questioned The X-Files' The Lone Gunmen.
Oz
Homicide's detectives watched Oz's Miss Sally on TV.
St. Elsewhere
St Elsewhere's hospital management company Weigert (was Ecumena) took over Oz's hospital.
The Bob Newhart Show
The Bob Newhart Show's Elliot Carlin visited the psych ward at St Elsewhere's St Eligius Hospital.
Newhart
The Bob Newhart Show's Bob Hartley woke up after dreaming the entire series Newhart during Newhart's finale.
Coach
Newhart's Larry, Darryl and Darryl squatted in Coach's Hayden and Christine's home
The Drew Carey Show
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
N.Y.P.D. Blue
The Drew Carey Show's cast went to NYC where a traffic tie-up was being investigated by NYPD Blue's James Martinez.
Hill Street Blues
NYPD Blue's station house was visited by Hill Street Blues' Buck Naked
Cop Rock
Hill Street Blues' Howard Hunter appeared on Cop Rock.
L.A. Law
Cop Rock's station house was also visited by Victor Sifuentes and Abby Perkins from L.A.Law