I'm not going to rank them but these 25 characters are my favorites.

Dorothy Zbornak (Golden Girls)
Rose Nylund (Golden Girls)
Blanche Devereaux (Golden Girls)
Sophia Petrillo (Golden Girls)
Jo Polniaczek (Facts of Life)
Blair Warner (Facts of Life)
Jack Tripper (Three's Company)
Chrissy Snow (Three's Company)
Stanley Roper (Three's Company)
Roseanne Connor (Roseanne)
Dan Conner (Roseanne)
Carrie Hefferman (King of Queens)
Dick Solomon (3rd Rock From the Sun)
Maude Findlay (Maude)
Alex Keaton (Family Ties)
Danny Tanner (Full House)
Lucy Ricardo (I Love Lucy)
Archie Bunker (All in the Family)
Frasier Crane (Frasier and Cheers)
Niles Crane (Frasier)
Karen Walker (Will and Grace)
Florida Evans (Maude and Good Times)
Woody Boyd (Cheers)
Diane Chambers (Cheers)
Sue Ann Nivens (Mary Tyler Moore Show)

:) What about you guys?

Rose Nylund, Dorothy Zbornak, Sophia Petrillo-The Golden Girls
Niles Crane, Daphne Moon Crane-Frasier
Jackie Harris, Darlene Conner, Dan Conner-Roseanne
The Ropers, Jack Tripper, Chrissy Snow, Janet Wood-Three's Company
DJ, Stephanie, and Michelle Tanner, Jesse Katsopolis-Full House
Tim and Jill Taylor, Brad, Randy, and Mark Taylor, Wilson Wilson, Al Borland-Home Improvement
Andy Taylor, Barney Fife, Opie Taylor-The Andy Griffith Show
Rob, Laura and Richie Petrie, Buddy Sorrell-The Dick Van Dyke Show

in no particular order:

Rose Nylund, The Golden Girls
Blanche Devareaux, The Golden Girls
Blossom Russo, Blossom
Six LeMeure, Blossom
Stephanie Tanner, Full House
Natalie Green, The Facts Of Life
Bridget Hennessy. 8 Simple Rules
Moesha Mitchell, Moesha
Cybill Sheridan, Cybill
Mary Anne Thorpe, Cybill
Zack Morris, Saved By The Bell
Punky Brewster, Punky Brewster
Margo Kramer, Punky Brewster
Suzanne Sugarbaker, Designing Women
Charlene Frazier Stillfeild, Designing Women
Ben Seaver, Growing Pains
Murphy Brown, Murphy Brown
Corky Sherwood Forrest, Murphy Brown
Faith Fairfield, Hope & Faith
Wendy Lubbock, Just the ten of us
Cindy Lubbock, just the ten of us
Dorothy Spornack, The Golden Girls
Sophia Petrillio, The Golden Girls
Vanessa Huxtable, The Cosby Show
Julia Sugarbaker, Designing Women

#1 is Jack Tripper (Three's Company)

The rest in no particular order:

Janet Wood (Three's Company)
Ralph Furley (Three's Company)
Terri Alden (Three's Company)
Dennis Mitchell (Dennis the Menace)
George Wilson (Dennis the Menace)
Alice Mitchell (Dennis the Menace)
Vince Carter (Gomer Pyle USMC)
Gomer Pyle (Gomer Pyle USMC)
Parker Lewis (Parker Lewis Can't Lose)
Frank Lemmer (Parker Lewis Can't Lose)
Grace Musso (Parker Lewis Can't Lose)
Virginia Chance (Raising Hope)
Burt Chance (Raising Hope)
Martin Payne (Martin)
Sheneneh Jenkins (Martin)
Jerome (Martin)
Laverne DeFazio (Laverne & Shirley)
Shirley Feeney (Laverne & Shirley)
April Ludgate (Parks & Recreation)
Ron Swanson (Parks & Recreation)
Michael Scott (The Office)
Peter Brady (The Brady Bunch)
Marcia Brady (The Brady Bunch)
Al Bundy (Married with Children)

1. Sgt Vince Carter - Gomer Pyle USMC
2. George 'Kingfish' Stevens - The Amos 'N Andy Show
3. Deputy Barney Fife - The Andy Griffith Show
4. Mary Ann Summers - Gilligan's Island
5. Fred G. Sanford - Sanford & Son
6. Maxwell Smart - Get Smart
7. Eddie Haskell - Leave it to Beaver
8. Sam Drucker - Green Acres/Petticoat Junction
9. Arthur Fonzarelli - Happy Days
10. Sheriff Andy Taylor - The Andy Griffith Show
11. Nick Yemana - Barney Miller
12. Gomer Pyle - The Andy Griffith Show/Gomer Pyle USMC
13. Sgt Charlie Hacker - Gomer Pyle USMC
14. Agent 99 - Get Smart
15. Andrew H. Brown - The Amos 'N Andy Show
16. George Wilson - Dennis the Menace
17. Ralph Kramden - The Honeymoooners
18. Ed Norton - The Honeymooners
19. Chuck Campbell & Bob - Soap
20. Herman Munster - The Munsters
21. Mr. Eustace Haney - Green Acres
22. Maynard G. Krebs - The Many Loves of Dobie Gillis
23. Carol Post - Mister Ed
24. Jan Brady - The Brady Bunch
25. Oscar Madison - The Odd Couple

Top 2:
Lucy Ricardo (I Love Lucy)
Michael Scott (The Office)

The rest (not in order):
Rhoda Morgenstern (Mary Tyler Moore/Rhoda)
Mary Richards (Mary Tyler Moore)
Lou Grant (Mary Tyler Moore)
Ted Baxter (Mary Tyler Moore)
Ethel Mertz (I Love Lucy)
Rob Petrie (Dick Van Dyke Show)
Rachel Green (Friends)
Chandler Bing (Friends)
Ross Geller (Friends)
Phil Dunphy (Modern Family)
Clair Dunphy (Modern Family)
Leslie Knope (Parks and Recreation)
Lucille Bluth (Arrested Development)
Buster Bluth (Arrested Development)
Arthur Fonzarelli (Happy Days)
Cliff Huxtable (Cosby Show)
Maxwell Smart (Get Smart)
Samantha Stephens (Bewitched)
Aunt Clara (Bewitched)
Paul Buchman (Mad About You)
Marie Barone (Everybody Loves Raymond)
Norm Peterson (Cheers)
Barney Fife (Andy Griffith Show)