Just to reiterate for the sake of those sensitive about such matters, if this thread lives at all, spoilers will probably sprout like fungus all over it. That applies especially to my post, particularly the script.
I just recently finished viewing Arlington Road. I can’t say that the ending ruined a great film, since there was no great film to ruin there. The twist at the end was a neat idea in theory, but in execution, hoo boy! When I thought about the sheer absurdity of the logistics behind the terrorists planning it, I believe it caused actual damage to the part of my brain that handles suspension of disbelief. Before those neurons committed apoptosis for the well-being of the rest of my brain, however, they did present me with this script of the terrorist’s diabolical planning session:
Shadowy conspiracy: Right, now, Fennimore…
Oliver Lang: It’s Lang, now, boss.
SC: Oh, that’s right. Now, Oliver, that was a lucky break, your son just about getting his hand blown off and stumbling all alone down a street completely deserted except for that single car that Faraday fellow was driving.
OL: <shifty eyed> Yesssss…lucky. Accident. Very much so.
SC: <knowing wink> Right. Now that you’ve suddenly befriended your neighbor that way, what’s the next step?
OL: Well, first I need to make him real suspicious. I figure a single glance at a blueprint that’s not a mall will make him duly paranoid. He’ll then very quickly determine my past, especially when I have a couple pieces of mail accidentally delivered to his house.
SC: Good, good.
OL: Along the way, he’ll send his son off with mine to Nazi Camp, despite his misgivings. I’ll then do something very suspicious in a parking garage, like, ohh, switch vehicles, while amazingly not noticing his girlfriend is standing and watching not a stone’s throw away in the otherwise empty garage.
SC: Brilliant!
OL: She’ll trail me to that delivery company, and I’ll only notice her as she’s leaving, even though she was always following directly behind my van.
SC: You’re a crafty one, I’m glad you’re on our team.
OL: I figure I’ll have my wife surprise her after she makes a phone call to Faraday, because she really does get pissy if she doesn’t get to have a scene to act evil.
OL: <breath whooshes out in a pained gasp as aforementioned wife drives an irritated elbow into his ribs> Then we’ll kill her, erase the messages from his machine, and tap his phone lines while we’re at it. Then we’ll befriend him again to comfort him. But he needs to get paranoid again, but luckily his FBI friend will call him again, that should be all it takes.
SC: Logical.
OL: We’ll let him see someone very suspiciously playing with his phone junction box, and in order to be more secure, he’ll call his FBI pal back immediately from his cellular phone. He’ll be okay with that because cell phones are very secure, and never mind the fact that he’s calling right from his own driveway.
SC: I’ve always admired your ability to just get inside someone’s head. It’s eerie.
OL: Thank you. He’ll be determined to get real evidence, and to do that, he’ll go talk to the father of our previous patsy, knowing he can get results where thousands of man-hours before him have utterly failed. He’ll then see a picture of myself and my boy in Nazi Camp, and then have the shocking realization that sending his son there was a bad idea. Faraday will go get a rental car and drive like heck to get his son from Nazi Camp, but we’ll already have picked him up. He’ll drive back, and we’ll reveal our true evil during a party, along with blackmail about his son’s life. Instead of evil this time, my wife will just act sort of goofy. <is elbowed again> Oof!
SC: Hmmm…and that won’t paralyze him with fear? Remember the goal.
OL: Way ahead of you, Shadowy Conspirators! We’ll go ahead and put the bomb in the trunk of the car he’ll be driving. He’ll pick up the trail of the van his son will be in, and we’ll have a tense chase through the city.
SC: He won’t crash his car or total it by running against traffic and through red lights and such?
OL: No, there’s no danger of that.
SC: Ummm…
OL: <hurrying on> We’ll have to change the van he’s chasing in midchase, so we’ll lead him into a parking garage, and I’ll stop his car by crashing into it.
SC: Er…
OL: That’s right. Don’t worry, I’ll specifically crash so it stops dead but with only cosmetic damage that won’t stop an even higher speed chase later.
SC: Ooookay.
OL: We’ll beat each other up for a few minutes, then I’ll let him pound me bloody and get back in the bomb car to drive off and continue the chase. He’ll pick up the decoy van with some even more reckless driving…
SC: You’re sure he won’t total his car doing that kind of thing?
OL: Oh, it’s a calculated risk, but college professors are almost always highly trained stunt drivers. It’s part of getting tenure, I think. And at that point, victory’s assured. He’ll get right into the FBI’s parking garage…
SC: All the armed agents won’t shoot him even though he’ll be crazy-eyed and raving?
OL: Certainly not. As I said, he’ll get down there, and then we’ll remote-detonate the bomb in his car. I think it’s our most flawless plan yet.
SC & OL: <evil laughter, and then they make a toast>
What other movie endings, not necessarily even twisty ones, have made Dopers boggle at the implausibility/incoherence/WTF-factor?