Anybody who enjoyed the film and/or the book could do a whole lot worse than check out Michael Lewis' 2011 follow-up 'Boomerang: Travels in the New Third World' where the author travels through Europe in the aftermath of the financial crash investigating how various countries (Iceland, Greece...
I was working on contract at RBS at the time of the ABN AMRO acquisition. Seems to me there was minimal due diligence because RBS were engaged in a full-on willy-waving contest with Barclays over the acquisition of that toxic debt-ridden bank. All sense went out the window right there.