Win! Sherlock Holmes: A Game of Shadows on DVD Australian Penthouse

Thanks to Warner Home Entertainment, Australian Penthouse is offering 5 readers the chance to win a copy of Sherlock Holmes: A Game of Shadows on DVD, valued at RRP $39.95 each.
THE COMPETITION
To be in the running to win one of 5 copies of Warner Home Entertainment's Sherlock Holmes: A Game of Shadows on DVD, answer the following question: question "Other than Holmes and Watson, who are your two other favourite on-screen detectives, and why," in 25 words or less.