Brad Pitt on David Thewlis. This is essentially an appreciation post. In the acting community, David Thewlis is widely regarded as one of the most talented actors of his generation,and rightfully so. I wish this belief was more widely spread I suppose, as he is best known for his role as Remus Lupin in the "Harry Potter" series, which he was fantastic in. Thewlis has a remarkable ability to imbue his characters with depth and complexity. His breakthrough performance in Mike Leigh's "Naked" (1993