Actors With More Than One Hit TV show

John Cleese (Monty Python's Flying Circus, Fawlty Towers)
Bill Daily (I Dream Of Jeannie, Bob Newhart Show).
Martin Mull (Mary Hartman Hary Hartman, Roseanne, Sabrina The Teenage Witch).
Peter Scolari (Bosom Buddies, Newhart, Girls).
Julia Louis-Dreyfus (Seinfeld, Veep).

 

"Denny Crane"

 

Speaking of Boston Legal, James Spader and Blacklist.

 

And don't forget that he was on Three's Company then on The Ropers spinoff.

(The Three's Company role was considered a guest role since he wasn't a regular.)

 

(Stretching a bit, I include firmly recurring characters, and partial season full regular cast member, and list one-full-season-only shows where there are two or more other "hit" shows)

Bea Benaderet: Burns and Allen, Petticoat Junction
Ann Sothern: Private Secretary/Susie, The Ann Sothern Show
Gale Gordon: Our Miss Brooks, Dennis The Menace, The Lucy Show, Here's Lucy, (and Life With Lucy )
Carl Betz: The Donna Reed Show, Judd For The Defense
Susan Dey: The Partridge Family, L.A. Law
Mark Harmon: St. Elsewhere, NCIS
George Lindsey: The Andy Griffith Show, Hee Haw
Gunilla Hutton: Petticoat Junction, Hee Haw
Pamela Anderson: Home Improvement, Baywatch
Ted McGinley
The Simpsons: The Tracey Ullman Show, The Simpsons
Barbara Anderson: Ironside, Mission: Impossible
William Windom: The Farmer's Daughter, My World And Welcome To It, Murder She Wrote
Eve Arden: Our Miss Brooks, The Mothers-In-Law
Alice Ghostley: Bewitched, Mayberry R.F.D., Designing Women, Evening Shade, Small Wonder
Martin Landau: Mission: Impossible, Space: 1999
Barbara Bain: Mission: Impossible, Space: 1999
Mary Tyler Moore: Richard Diamond (where contrary to legend her face was shown several times, partially obscured but you can identify seeing her [now] and always her voice)
Greg Morris: Mission: Impossible, Vega$, (and Mission: Impossible 1988 extension)
Barbara Barrie: Barney Miller, Suddenly Susan
John Forsythe: Bachelor Father, Charlie's Angels, Dynasty
Robert Walden: The Bold Ones: The New Doctors, Lou Grant, Brothers
Hal Holbrook: The Bold Ones: The Senator, Designing Women, Evening Shade
Burt Reynolds: Riverboat, Gunsmoke, Hawk, Dan August, Out Of This World, B.L. Stryker, Evening Shade
Marilu Henner: Taxi, Evening Shade
Ann Wedgeworth: Three's Company, Filthy Rich, Roseanne, Evening Shade
Markie Post: Night Court, Hearts Afire

(and wikipedia and imdb are leading me to 20 more but it's late)

 

Seth MacFarlane: Family Guy, The Cleveland Show, American Dad!, Robot Chicken (a cult hit show)

Ted McGinley: Happy Days, Married...With Children, The Love Boat, Dynasty

 

Also as "Hank Kingsley" on The Larry Sanders Show.

 

Of course we have Don Knotts as Barney Fife and Ralph Furley ...

 

Bryan Cranston - Malcolm In The Middle and Breaking Bad. Not sure if Malcolm was a "hit" though.

 

Sherman Helmsley - The Jeffersons, Amen.

If Sherman was in it I'd watch it!

 

Ted Danson

CSI

Cheers

Curb Your Enthusiam

Becker

 

It was a top 30 show for its first 3 seasons.

 

Works for me

 

Bea Benaderet (Petticoat Junction, The Flintstones)
Tom Bosley (Happy Days, Murder She Wrote, Father Dowling Mysteries)
Jane Curtain (SNL, Kate & Allie, 3rd Rock from the Sun)
Bill Daily (I Dream of Jeannie, The Bob Newhart Show)
Tony Danza (Taxi, Who's the Boss?)
Robert Guillame (Soap, Benson, SportsNight)
Katherine Helmond (Soap, Who's the Boss?)
Howard Hesseman (WKRP in Cincinnati, Head of the Class)
Kate Jackson (Charlie's Angels, Scarecrow & Mrs. King)
Julie Kavner (Rhoda, The Simpsons)
Mila Kunis (That '70s Show, Family Guy)
Richard Mulligan (Soap, Empty Nest)
Susan Saint James (McMillan & Wife, Kate & Allie)
Robert Urich (Vega$, Spencer for Hire)
Marcia Wallace (The Bob Newhart Show, The Simpsons)
Ted Wass (Soap, Blossom)
Dennis Weaver (Gunsmoke, McCloud)

 

You forgot one:

 

But you don't like Sherman enough to know it's "Hemsley"? For shame!

Of course, Hemsley and Isabel Sanford were regular on "All in the Family" until they got spun-off for "Jeffersons"...

 

Is it "fair" to include someone who plays the same character on a "spin-off" show, though? Yes, it's technically 2 separate series, but still... !

 

Jerry Stiller (Seinfeld, King of Queens)

Connie Britton (Spin City, Friday Night Lights, Nashville, American Horror Story)

John Cleese (Monty Python, Fawlty Towers)

 

Mandy Patinkin - Criminal Minds, Homeland
Claire Danes - My So Called Life, Homeland

 

And Chicago hope

 

Melissa Joan Hart

Sabrina, The Teenage Witch

Clarissa Explains It All

 

- Wally Cox (Mister Peepers, Underdog)
- Avery Brooks (Spenser For Hire (and its spinoff, "A Man Called Hawk"), Star Trek: Deep Space Nine)
- Dirk Benedict (Battlestar Galactica, The A Team)
- Martin Milner (Route 66, Adam 12)
- Erin Gray (Buck Rogers in the 25th Century, Silver Spoons)

 

Amy Poehler -- Saturday Night Live and Parks & Recreation

 

Ernest Borgnine- McHales Navy/Airwolf

Gavin McLeod- McHales Navy/MTM Show/Love Boat

Tim Conway- McHales Navy/Carol Burnett Show

Vicki Lawrence- Carol Burnett Show/Mamas Family

 

She was also Cousin Pearl during the first season of "The Beverly Hillbillies".

"Gentle Ben" too...