Michael Douglas celebrates his 73rd birthday on Sept. 25. Happy Birthday, Mr. Douglas! For young fans, Douglas is known as Dr. Hank Pym in “Ant-Man” (2015) and “Ant-Man and the Wasp” (2018), but this Hollywood legend has starred in great films for decades. Looking back to the 1980s, here are four essential Michael Douglas films that you can catch on Netflix and/or Amazon right now. “The Star Chamber” (1983) – After years of watching guilty men enter their courtrooms and unfairly walking free, a group of judges form their own…