Snatch - I didn't care for this and don't remember it well enough to comment.
Election - I thought the Alexander Payne movie was grating although it was distinctive and technically good. I liked the Johnnie To movie and thought it was interesting (apparently it was carefully researched) end enjoyed it but I don't remember the details.
M - As good as it's supposed to be. Probably Lang's masterpiece.
Hard Boiled - This didn't click with me but I'd give it another shot.