Cheers won its second straight Emmy for Outstanding Comedy Series, while Hill Street Blues made history.
It became the first show to win the Emmy for Outstanding Drama Series four times.
This record still stands today, but has been tied by L.A. Law, The West Wing, Mad Men and Game of Thrones.
It received at least 14 major nominations for the fourth straight year, winning four.
His win was also the last time a non-Network Syndicated performance won an Acting Award.