‘Hill Street Blues’: THR’s 1981 Review On January 15, 1981, NBC premiered the police drama that would go on to collect 26 Emmy wins during its seven season run.

After “Hill Street Blues,” Sikking played Dr. David Howser, father of Doogie Howser (Neil Patrick Harris), for all four seasons of the ABC medical sitcom from 1989 to 1993.

James B. Sikking, who played Neil Patrick Harris' father on “Doogie Howser, M.D.” and earned an Emmy nomination for "Hill Street Blues," has died at age 90.

After “Hill Street Blues,” Sikking went on to play Dr. David Howser, father of Doogie Howser (Neil Patrick Harris), on the ABC medical sitcom.