Here’s the trailer for The Secret Life of Walter Mitty. Directed by and starring Ben Stiller, the movie is based on the classic James Thurber story about a man who disappears into his own vivid daydreams. Kristen Wiig, Sean Penn, Adam Scott, Shirley MacLaine, and Patton Oswalt round out the cast. Walter Mitty comes out this Christmas and looks pretty incredible going off of this trailer, which is one of the best I’ve seen in a while.