Aleister Crowley, John Dee, and James Bond

Several news articles have mentioned that Le Chiffre, the villain in the new James Bond movie Casino Royale, might be based on English occultist Aleister Crowley, but none have said anything about John Dee. Dee was a 16th century scholar and magus who may have acted as a spy for Elizabeth I. And how did he sign his letters to the queen? 007.

Source: Richard Kaczynski's excellent Crowley biography Perdurabo.