I must agree with all that's been said. If airlines put in so many seats that reclining causes problems, then they must remove the recline function. I have previously faced a similar situation, and despite a polite request got nowhere. I did as the gentleman above did, grabbed the seat and pushed it forward - it's actually quite easy. Chap in front got the message.
I also very strongly agree on the point earlier regarding an international standard (to ensure adequate comfort) being set for economy seat pitch minimum. This would ensure all airlines could still compete on a level playing field.