Mine is Sherlock Holmes, (played by Robert Downey Jr.) and Jude Law is so good at being Sherlock Holmes' sidekick. Personally Robert Downey Jr. is quite the guy in the following movies I've seen of him:
Due Date (R)
Iron Man (PG-13)
Iron Man 2 (PG-13)
Iron Man 3 (PG-13)
Sherlock Holmes (PG-13)
Sherlock Holmes: A Game of Shadows (PG-13)
What's your favorite character in the book?