James B. Sikking, Star of 'Hill Street Blues' and 'Doogie Howser,' Dies at 90

James B. Sikking, known for his roles as Lt. Howard Hunter on "Hill Street Blues" and Dr. David Howser on "Doogie Howser, M.D.," has died at 90 due to complications from dementia. Sikking had a prolific career in both television and film, with notable appearances in "Point Blank," "Star Trek III: The Search for Spock," and "The Pelican Brief." He was also dedicated to charitable causes and educational programs. He is survived by his wife Florine, two children, and four grandchildren.