Conversation so far:
what did Ozzie Nelson do on the radio?
Besides band appearances, he and Harriet had been regulars on Red Skelton's radio show.
did they have any top hits?
The Adventures of Ozzie and Harriet.
The show went on the air in 1944.
how long was it on the air?
until 1949.
why did it end?
in 1952 it moved over to television (the radio version continued for another two years).
Are there any other interesting aspects about this article?
His last television show was in the fall of 1973 and entitled Ozzie's Girls, and lasted for a year in first-run syndication.
was he married?
CANNOTANSWER.
did he have family?
CANNOTANSWER.

Question: what was his best accomplishment?
Self-contained rewrite: what was Ozzie Nelson's best accomplishment?