Amazon have Jonathan Creek series 1-4 on a 9-disc boxset for £28.97 with free delivery. This is £11 cheaper than the next pest price I saw, which was almost £40 at HMV.
From the often bizarre pen of One Foot in the Grave writer David Renwick comes the entire first four series of this very popular BBC drama series . Working from his home in a converted windmill, Jonathan Creek (Alan Davies) is a magician with a natural ability for solving puzzles. He soon puts this ability to another use--solving murders. Together with his journalist sidekick played by Caroline Quentin, and later by Julia Sawalha, Jonathan is called upon to solve a series of what appear to be unsolveable crimes.
Extras include the documentary 'Long Hair and Duffel Coat', a commentary by director Marcus Mortimer and writer David Renwick, Alan Davies' and Caroline Quentin's screen tests and deleted scenes.