Iron Man, Richard Linklater, and goat testes? Was this film made bespoke exclusively for you? Variety reports that Robert Downey Jr. has been cast in Richard Linklater’s upcoming film based on the January 19 episode of Gimlet Media’s Reply All podcast. Entitled “Man of the People,†the program unspooled the story of “Dr.†John R. Brinkley, a self-proclaimed medical specialist who in the early-20th century touted the transplant of goat testicles into human beings as a medical marvel. (Brinkley was not an accredited doctor nor did his goat-testicle theory hold much water, let alone goat testicles.) It’s unclear whether Downey Jr. will play Brinkley or Dr. Morris Fishbein, the actual doctor and editor of the Journal of the American Medical Association determined to expose him for the fraud he was, but considering the subject matter, it would be fitting if RDJ played the pair.