More Purdie awesomeness: http://www.youtube.com/watch?v=qCyRPCojb2Q
Here's an interesting thing from Wikipedia about BP's claims of being a hidden Beatle - I hadn't seen this before:
In the same year original Beatles drummer Pete Best and guitarist Tony Sheridan recorded tracks in Hamburg with the Beatles. Later Bernard Purdie added drum overdubs to tracks from these sessions, including "Ain't She Sweet", "Take Out Some Insurance on Me Baby" and "Sweet Georgia Brown". The main reason for this was to give them a punchier sound for the US market. These tracks were eventually released on January 31, 1964 by Polydor. Ringo Starr's physical approach to drumming was probably influenced by Purdie's Motown style.