A cause of death has been revealed for Aussie actor Julian McMahon, who played Dr. Doom in two "Fantastic Four" movies and Christian Troy in the TV drama "Nip/Tuck," among other roles.McMahon died of cancer,

"With an open heart, I wish to share with the world that my beloved husband, Julian McMahon, died peacefully this week after a valiant effort to overcome cancer," Kelly said in the statement.