There is little doubt that Christopher Walken is one of the more eccentric actors in Hollywood today. His most recent stunt may well have cemented that status. In the series one finale episode of the BBC Series The Outlaws, the 78 year old actor painted over a Banksy original painting as a part of the story.
The anonymous artist had painted one of his signature rats on the set of the drama, as it was filming in his home city of Bristol. The rat was painted over by Christopher Walken during the final episode.