what we need to do is to throw all these ridiculous security measures overboard and start being normal people again instead of overly scared lemmings. Air plane bombings and hijacking is nothing new, it's just overblown by the media. Where there is a will there is a way, even for terrorists.
I assume you are referring to the more obviously ridiculous measures (only plastic cutlery, no tweezers, etc). You don't really believe that most airport security is currently pointless, do you?
The following propositions seem pretty clear to me:
1. Airport security will never catch every nutjob that really wants to blow up an airliner. Humans are inventive and it is just not (practically) possible to search every nook and cranny for every possibly suspect substance.
2. The main functions of airport security seem to be (a) to make it extremely hard to bring down an airliner the easy way (ie guns, conventional explosives, etc); (b) to deter nutjobs from attempting more inventive methods, in case they get caught; and (c) to make the public feel safer.
3. The actual application of airport security measures is essentially in the hands of goons who will make mistakes (and therefore also probably cannot be given too much discretion).
4. When someone does get through the net, there will always be a knee-jerk over-reaction because (a) it sells papers; (b) it helps politicians look like they are doing something useful; and (c) the public don't think hard enough to realise that someone will occasionally get through whatever security measures are dreamed up.
5. If airport security was removed today, so that we could all go back to flying free of restrictions, there would be quite a few airliners in the drink before the nutjobs got sick of martyring themselves.
Boxes or canisters of film should probably go through the X-ray, like everything else. Until recently, there has been some care taken to ensure that the hand-baggage machines do not ruin film. Whether that will remain the case as film-users become scarcer and knees jerk harder, I don't know. If flying to the US now, I would just buy my film there and probably get it processed there too before I left.
Ian