Should be someone who at one point was in the opening credits (no guest stars or recurring). Sometimes the choice may be obvious, sometimes it may be debatable.

I’ll say after One Day At A Time ended, Valerie Bertinelli had the most successful career (Michael Lembeck had big success behind the camera but I still have to give it to Valerie)

ALF

Liz Sheridan who played Rachel Ochmonek on ALF and went on to play Jerry Seinfeld's mother on Seinfeld

I guess Jennifer Aniston had the most success of the Friends cast ?

Penny Marshall became a successful director after Laverne and Shirley ended its run.

Peter Falk was the most successful cast member on Columbo. He was also the 2nd most successful and the 3rd most successful cast member on Columbo.

Tony Shalhoub went on to the most success after Wings.

Girl Meets World - I think that at this point, is pretty safe to say that Sabrina Carpenter (https://www.reddit.com/r/boymeetsworld/comments/1cn0g74/sabrina_carpenter/) has become the breakout star of that show, surpassing Rowan Blanchard (https://www.sitcomsonline.com/boards/showthread.php?t=461716), who played the titular "girl" in Girl Meets World.

The Waltons - Richard Thomas

The Sonny and Cher Comedy Hour - Cher

I guess Jennifer Aniston had the most success of the Friends cast ?

That one’s a bit tricky, but I’d agree. They all continued to work. I’d go

First level, Aniston

Second level Cox, Perry, Kudrow

Third level Schwimmer, LeBlanc



For Happy Days, Ron Howard. Not only became a director, but a name brand director

That one’s a bit tricky, but I’d agree. They all continued to work. I’d go

First level, Aniston

Second level Cox, Perry, Kudrow

Third level Schwimmer, LeBlanc



For Happy Days, Ron Howard. Not only became a director, but a name brand directorI would switch the Matthews. Matthew Perry flopped in one season with both Studio 60 on the Sunset Strip (which I heard was a really expensive flop) and Go On. The Odd Couple refake lasted a bit longer but it was awful and a pale shadow of the original. And of course there were his drug problems that led to premature death. Matt Leblanc's Man With a Plan lasted four seasons and is syndicated every day now on LAFF. Man With a Plan ratings were good enough to continue for season 5 but Paramount messed that up as it was shortly after they took over CBS again. :mad:

“Malcolm in the Middle” - Bryan Cranston

Tom Hanks . After his start on Bosom Buddies he went on to become a major movie star. A lot more successful than the other cast members .

“Cheers” - Woody Harrelson with Ted Danson a very close second.

Warren Beatty / Dobie Gillis

Sally Field / Gidget, The Flying Nun

Clint Eastwood / Rawhide

Annette Funicello / The Mickey Mouse Club

Who wins The Dick Van Dyke Show, Dick or Mary Tyler Moore?

Clint Eastwood / Rawhide
and whats interesting about that is yhat when clint took over the lead from eric fleming in the final season it did not really work that well

No mention of John Travolta?

I’m so con-fuuuused!

cd

I would switch the Matthews. Matthew Perry flopped in one season with both Studio 60 on the Sunset Strip (which I heard was a really expensive flop) and Go On. The Odd Couple refake lasted a bit longer but it was awful and a pale shadow of the original. And of course there were his drug problems that led to premature death. Matt Leblanc's Man With a Plan lasted four seasons and is syndicated every day now on LAFF. Man With a Plan ratings were good enough to continue for season 5 but Paramount messed that up as it was shortly after they took over CBS again. :mad:

Yeah but Matthew Perry's movie career was quite successful as opposed to Matt Leblanc's movie career which was a complete failure. :lol:

Ed.

Who wins The Dick Van Dyke Show, Dick or Mary Tyler Moore?

I'm giving that one to Mary Tyler Moore.

Ed.

“Silver Spoons,” “It’s Your Move,” “The Hogans’ Valerie’s Family” and “Arrested Development” - Jason Bateman

Richard Dawson hosted the hugely successful game show Family Feud on both ABC and in first-run syndication between 1976 to 1985 following his six-season run as Corporal Peter Newkirk on Hogan's Heroes.

Regina King (227) won an Academy Award for Best Supporting Actress.

Steve McQueen (Wanted: Dead Or Alive).

Easy one. ER, George Clooney.

Who wins The Dick Van Dyke Show, Dick or Mary Tyler Moore?

It's a tie

Easy one. ER, George Clooney.

Both the sitcom and the drama

Mork and Mindy - Robin Williams

Apple's Way - Kristy McNichols

Rhoda - Julie Kavner

Gary Moore Show - Carol Burnett

Underdog- Don Adams

Rocky and Bullwinkle- William Conrad

Mayberry RFD- Ken Berry

Card Sharks - Markie Post

Donna Reed Show - Shelly Fabares

One Day at a Time (original version) Valerie Bertinelli

Accidentally Family - Jerry Van Dyke

Jeff's Collie - Lassie

All in the Family - Rob Reiner

On Our Own (1977-79) - Bess Armstrong

Petticoat Junction- Meredith MacRea with Higgins the dog a close second.

Life with Elizabeth- Betty White

Our Miss Brooks- Toss up between Gale Gordon and Richard Crenna

I would say David Boreanaz from “Buffy, the Vampire Slayer”.

Started off as a recurring, became a regular, and then went on to lead his own show “Angel”.

After that he did “Bones” and now “SEAL Team”.

Was Molly Ringwald mentioned yet? She started out in The Facts of Life before they cut a lot of the girls out and just had the four girls. Molly went on to be in a lot of teen movies in the 80's, a very successful actress.

Ron Howard went have a post-Andy Griffith show success by a having a starring role on his other sitcom Happy Days from Seasons 1 to 7(but made 2 guest appearances in Season 11) and later directing films

Andy Griffith also have post-Andy Griffith show success by playing Ben Matlock on Matlock(Original) from 1986 to 1995

Ariana Grande from "Victorious"

Susan Dey made a successful transition from The Partridge Family to L.A. Law within a decade or so.

Jada Pinkett Smith (A Different World).

Denzel Washington (St. Elsewhere).