Rank 'em ;)

1. Frasier (1993-2004)
2. Cheers (1982-1993)
3. Wings (1990-97)
4. Sanford & Son (1972-77)
5. Family Ties (1982-89)
6. The Cosby Show (1984-1992)
7. Sanford (1980-81)
8. Diffrent Strokes (1977-1985)
9. Amen (1986-1991)
10. Scrubs (2001-Current)

10. Golden Girls
9. Night Court
8. Family Ties
7. ALF
6. Diff'rent Strokes
5. The Facts of Life
4. The Cosby Show
3. Seinfeld
2. Frasier
1. Cheers


(my top 5 are my actual top 5, of any sitcoms ever)

10) Family Ties (1982-1989)
9) Father Knows Best (1955-1958)
8) Hazel (1961-1965)
7) Mad About You (1992-1999)
6) Cosby Show (1984-1992)
5) Seinfeld (1990-1998)
4) Cheers (1982-1993)
3) I Dream of Jeannie (1965-1970)
2) Get Smart (1965-1969)
1) Friends (1994-2004)

1. Family Ties
2. The Cosby Show
3. Cheers
4. Punky Brewster
5. Empty Nest
6. Seinfeld
7. The Facts of Life
8. The Golden Girls
9. Diff'rent Strokes
10. Amen

No particular order...

"The Facts of Life" (1979-1988)
"Diff'rent Strokes" (1978-1985)
"Mama's Family" (1983-1985)
"I Dream of Jeannie" (1965-1970)
"Sanford and Son" (1972-1977)
"Silver Spoons" (1982-1987)
"The Fresh Prince of Bel-Air" (1990-1996)
added later...
"The Golden Girls" (1985-1992)
"227" (1985-1990)

10) Frasier
9) Empty Nest
8) Cheers
7) Punky Brewster
6) The Golden Girls
5) Mama's Family
4) The Facts of Life
3) Will & Grace
2) Friends
1) I Dream of Jeannie

10. Cheers
9. Scrubs
8. Frasier
7. A Different World
6. Family Ties
5. Seinfeld
4. Friends
3. The Cosby Show (first 6 seasons)
2. Diff'rent Strokes
1. The Facts Of Life

1.The Golden Girls
2.Seinfeld
3.Friends
4.Will & Grace
5.The Cosby Show
6.Sanford and Son
7.Alf
8.Fresh Prince of Bel-Air

1. The Facts of Life (1979-1988)
2. Diff'rent Strokes (1978-1986)
3. ALF (1986-1990)
4. The Golden Girls (1985-1992)
5. Wings (1990-1997)
6. Seinfeld (1990-1998)
7. Get Smart (1965-1969)
8. Mama's Family (1983-1985)
9. Hazel (1961-1965)
10. Amen (1986-1991)

1. NewsRadio 1995-1999
2. Frasier 1993-2004
3. 3rd Rock from the Sun 1996-2001
4. Seinfeld 1990-1998
5. ALF 1986-1990
6. Wings 1990-1997
7. Night Court 1984-1992
8. Get Smart 1965-1969
9. I Dream Of Jeannie 1965-1970
10. ?

1. Family Ties
2. The Cosby Show
3. Amen
4. 227
5. ALF
6. The Hogan Family
7. Father Knows Best
8. The Golden Girls
9. Silver Spoons
10.Please Don't Eat the Daisies

Honorary Mention:
Empty Nest - Great show but two things hurt the show. The departure of Kristi McNichol and it overstayed its welcome. The freshness was gone in the 6th season and in the final season the show was done. The only redeeming quality of the final season was the series finale when Kristi came back. What a fitting way to end the series.

Here are five NBC shows that was short lived that I enjoyed:
1. Fay - Lee Grant is an excellent actress. Unfortunately the show was not given a fair shake.
2. All Is Forgiven - Bess Armstrong was one hot looking actress on that show
3. The Brian Keith Show/The Little People - Shelley Fabares was a hottie on that show with that long willowy hair.
4. The Girl with Something Extra - Cute sitcom with John Davidson and Sally Field. Stephanie Edwards was quite hot on that one
5. The Jimmy Stewart Show - A nice wholesome family show with a lot of potential.

1. Get Smart
2. The Facts of Life
3. Family Ties
4. I Dream of Jeannie
5. Golden Girls
6. Diff'rent Strokes
7. Silver Spoons
8. Father Knows Best
9. Sanford & Son
10. Cheers

k, I don't know all the networks but from the shows people listed I gathered these were all nbc shows. :)

Family Ties

Silver Spoons

Diff'rent Strokes

NewsRadio

I Dream of Jeannie

Sanford and Son

Hazel

Cheers

The Facts of Life

Get Smart

1. Friends
2. I Dream of Jeannie
3. The Facts of Life
4. The Golden Girls
5. Scrubs
6. Cheers
7. Family Ties
8. Good Morning Miami (short lived I know)
9. Will & Grace
10. Get Smart

1.cheers
2.seinfeld
3.sanford and son
4.friends
5.night court
6.3rd rock from the sun
7.golden girls
8.chico and the man
9.frasier
10.scrubs

In no particular order...
1. Facts of LIfe
2. Diff'rent Strokes
3. Cheers
4. The Cosby Show
5. Family Ties
6. A Different World
7. Empty Nest
8. Punky Brewster
9. ALF
10. Emeril (Though short lived)

Honorable Mention: Father Knows Best

1.Seinfeld
2.Will and Grace
3.Friends
4.Scrubs
5.Stark Raving Mad (short lived in 1998)
6.The Cosby show
7.The Golden Girls
8.Cheers
9.Night Court
10.Frasier