Beloved 'Hill Street Blues' and 'Doogie Howser' Star James Sikking Dies at 90

Neil Patrick Harris paid tribute to his former Doogie Howser, MD co-star James B. Sikking, who passed away at 90 due to complications of dementia. Sikking, who played Dr. David Howser, was remembered by Harris as one of the kindest and most generous people. Sikking had a notable career with an Emmy nomination for Hill Street Blues and roles in shows like Brooklyn South and films like Star Trek III: The Search for Spock.