The USCF sells a fair number of chess DVDs. Some are theatrical films, including Fresh, Luzhin's Defense and Searching for Bobby Fischer, while others are instructional.
GM Nigel Davies gave a great answer to a question at the Chessville site:
Q: I have read Silman's Book How to reassess your chess. I wonder whether great players think in terms of imbalances. I would be really greatful if you gave me your personal view on this issue. - Alexander Janich, Germany
A: I haven't read Jeremy's book, but with very strong players much of the thinking process is subconscious, borne of thousands of hours of study and practice. When someone's thinking is still at a conscious level (whether looking for imbalances, structure or anything else) they have not achieved mastery.