HAID

Set to 2 different clues across 2 published puzzles, most often “Charles of "Hill Street Blues"” — The New York Times, Wednesday, 11 May 2005.

4 letters

Every clue on record, most used first

Charles of "Hill Street Blues"once
The New York Times — Wednesday, 11 May 2005
Actor Charles of "Hill Street Blues"once
The New York Times — Tuesday, 22 March 1994