Yes, Tim McGraw plays a role in the movie "Four Christmases" as a character named Howard. Howard is the father of Kate (played by Reese Witherspoon) and her fiancee, Brad (played by Vince Vaughn). Howard is a grumpy old man who doesn't believe in Christmas and has a strained relationship with his children. Kate and Brad are trying to have a traditional Christmas with their family, but they are forced to visit four different homes, including Howard's.