James B. Sikking, acclaimed for his roles in 'Hill Street Blues' and 'Doogie Howser, M.D.', has passed away at the age of 90 due to complications from dementia. His publicist, Cynthia Snyder, confirmed that he died peacefully at his Los Angeles home surrounded by family. Sikking's career spanned over six decades, featuring in numerous television series like 'Perry Mason', 'Mission: Impossible', and 'Little House on the Prairie', as well as films such as 'The Pelican Brief' and 'Star Trek III: The Search for Spock'. He earned an Emmy nomination in 1984 for his role as Lt. Howard Hunter in 'Hill Street Blues', a character inspired by his own military training. His portrayal of Dr. David Howser in 'Doogie Howser, M.D.' further cemented his status as a versatile actor. Sikking's legacy is marked by his contributions to both drama and comedy, enriching the entertainment industry with his dynamic performances.