Scriptwriter David Lloyd, who won an Emmy in 1976 for writing “Chuckles Bites the Dust” for The Mary Tyler Moore Show, has died at the age of 75. According to his IMDb page he started writing for The Tonight Show Starring Johnny Carson in the early 1960s and also wrote for The Dick Cavett Show and Jack Paar Tonite before moving entirely to sitcoms. In addition to The Mary Tyler Moore (he won another Emmy award for co-writing the final episode and a third in 1998 for Frasier), he wrote episodes of Rhoda, Bob & Carol & Ted & Alice, Taxi, The Associates, Amen, Cheers, Wings and Frasier. He also created Brothers and served as executive script consultant on Cheers, Wings and Frasier.
Update:Ken Levine has posted a wonderful tribute to David Lloyd at his blog.