I am not sure if this qualifies as overlooked because it did come out in 2005 and do decent business at the box office. Pierce Brosnan also got a Golden Globe nomination for Best Actor in a Comedy/Musical. But I think this movie still qualifies. The Matador is a Comedy about a hitman (Pierce Brosnan) going through a mid-life crisis. He meets a salesman (Greg Kinnear) who is also going through a mid-life crisis. They bond in Mexico and a year later the hitman shows up at the salesman's house. This is Pierce Brosnan's best performance. We get to see why he is such a great actor outside of the Bond series. He is hilarious and play completely against type. Instead of being suave and above it he is the opposite. In fact he is the anti-bond.