Here's some of my favorite books, dvds, and literature on pickpocketing:
-THEATRICAL PICKPOCKETING by Jim Ravel (book)
-PROFESSIONAL STAGE PICKPOCKETING by Ricki Dunn (book)
-CUTTING UP TOUCHES The History of Pickpocketing (book)
-HOW TO PICK POCKETS by Eddie Joseph (book)
-TECHNIQUES OF THE PROFESSIONAL PICKPOCKET by Wayne B. Yeager (book)
-WHIZ MOB by David Maurer (book)
-OLIVER TWIST (2005 movie) James Freeman's pickpocket scenes.
-HARRY IN YOUR POCKET (1974 movie) Best criminal pickpocketing movie ever made.
-MASTERING THE ARE OF PICKPOCKETING by James Coats (DVD)
Run the word 'pickpocketing' past Wikipedia, Youtube, Google, Yahoo, and most importantly the Magic Cafe archives, which is loaded with information and sources.
...lastly, here is an interesting pickpocketing video from Youtube to get you hyped up on the subject:http://www.youtube.com/watch?v=BclBgGQIt1s