Social-Engineer.org. blog, newsletter, also check the SECTF report and podcast
Dan Harmon's Story Telling Series
Scott Adams (of Dilbert Fame). Some random posts but some excellent SE commentary as well.
V.Rao. Always worth a read. Gervais is a good place to start but his books are worthwhile as well.
You are not so smart Not strictly SE but some great content.
List of biases.. Love them, live them, learn them, research them, apply them, and defend against them.
Notable researchers: Festinger, Kahneman, Klein, Linton, Matsumoto, Munger, Podolny, Tversky, Weber, Zak
Mitnick (also writes), Hadnagy(also writes), L0pht
Recommended Reading list (Summaries/links provided where possible).
48 Laws of Power blog, videos
Art of War
Boyds OODA Loop (1, 2, 3, 4)
Coercion - Why We Listen to What They Say (book snippet)
Glass Jaw: A Manifesto for Defending Fragile Reputations in an Age of Instant Scandal
How to Win Friends and Influence People (summary)
Method Acting (Stanislavsky) - 1, 2 (summary), 3 (link)
One Sentence Persuasion
Status Signals: A Sociological Study of Market Competition