In an interview with People magazine, President Obama revealed some of his favorite things from 2015. His favorite movie was The Martian, his favorite book was Fates and Furies, and his favorite song was "How Much a Dollar Cost" by Kendrick Lamar.
Here's (a clean version of) the song:
As for Michelle, her favorite song was the ever-popular "Uptown Funk" (which she danced to at the Easter Egg Roll to promote "Let's Move"), and her favorite movie was Pixar's Inside Out.