April 2 (UPI) -- Hollywood is mourning the death of Top Gun and Willow star Val Kilmer at the age of 65. Kilmer's cause of death Tuesday was pneumonia, according to his daughter Mercedes. Advertisement He had battled throat cancer , which robbed him of his voice, for more than a decade. "Val Kilmer was the most talented actor when in his High School, and that talent only grew greater throughout his life. He was a wonderful person to work with and a joy to know -- I will always remember him,"