Science in the Cinema is a free annual film festival at the AFI Silver Theatre in Silver Spring. Every Wednesday at 7 p.m. through Aug. 10, the National Institutes of Health presents a movie with a medical or science-related theme. Wednesday night is the 2004 documentary “Super Size Me,” in which Morgan Spurlock finds out what happens when he consumes nothing but McDonald’s food for a month. (It’s not pretty.) Aug. 3 is “A Single Man,” which deals with thoughts of suicide, and Aug. 10 is “Gifted Hands: The Ben Carson Story,” which stars Cuba Gooding Jr. as a neurosurgeon. After each film, an expert will talk about the science in the film and answer questions.