Ronald Gabriel "Ron" Palillo (April 2, 1949 – August 14, 2012)

(Fox News) – Ron Palillo, who played Horshack on the hit 1970s ABC-TV
sitcom "Welcome Back, Kotter," died Tuesday morning at his home from
an apparent heart attack, his rep confirms to FoxNews.com. 

Actor Don Most is best known for his role as Ralph Malph on the ABC
television series Happy Days (1974-1984).

Sally Ann Struthers was born in Portland, Oregon and attended Grant
High School. She is best-known for her role as Gloria Stivic on the CBS
sitcom All in the Family (1971-1979).

    
      Sherman Alexander Hemsley (February 1, 1938 – July 24, 2012)

(FOX News) – Iconic sitcom actor Sherman Hemsley, who made the character George Jefferson famous in “The Jeffersons” has died, his rep told Reuters Tuesday.

"Sherman Hemsley has been pronounced dead El Paso Sheriff’s Department has confirmed,” the actor’s agent Todd Frank said in a statement given to Reuters.

Hemsley appears to have died from natural causes, TMZ who first reported the
news of his death, said. Sources say he was discovered by his nurse who initially
thought that the actor was sleeping.

The 74-year-old star, who rose to fame after his appearances on “All in the Family”
and ultimately the spinoff, “The Jeffersons” was also a professional singer.

Hemsley was born in Philadelphia and ultimately dropped out of high school to join
the Air Force, People magazine reports. He later worked for the U.S. Postal Service before turning to show business.

“The Jeffersons,”  earned Hemsley both Emmy and Golden Globe nominations.

 
         
           Harriet Nelson (July 18, 1909 – October 2, 1994)

Harriet Nelson was born Peggy Louise Snyder in Des Moines, Iowa. She
was singer and actress, best known for her portrayal on the long-running
sitcom The Adventures of Ozzie and Harriet on radio, CBS/NBC from 1944
to 1954 and on ABC-TV from 1952 to 1966.