If I remember correctly, the first episode of the Superman animated series showed him grab a plummeting airliner by the tail… ripping the tail off and making the situation worse.
I’m guessing a couple of million dollars.
Megatron in the Transformers movie was held captive by cold air. Cold air! Here is a super-advanced hyper-intelligent robot menace that can survive the vacuum of space over interstellar distances, survive atmospheric re-entry, destroy entire city blocks with one smite of his hand, and has seemingly unlimited energy at the tips of his fingers. Yet we see him stopped dead by some cold air blowing on him.
Also, somehow these hyper technological terrors overlooked the lower range of the electromagnetic spectrum as a viable and useful means of communication. For some unexplained reason all radio communications were jammed except for “one shortwave channel.” “Shortwave channel” :smack: the writers had absolutely no idea what the hell they were going on about when the wrote that.
Even if it was somehow plausible that all radio communications could be jammed why would the Decepticons overlook a vast swath of useful radio spectrum?
Megatron: Starscream, I told you to make sure their communications were down.
Starscream: I did Megatron! I jammed their FM broadcast frequencies, cell phone network and internet.
Megatron: They have been communicating over the 22 meter band.
Starscream: The what now?
Megatron: You have failed me again Starscream.
Well, Starscream isn’t exactly known for his loyalty or trustworthiness. 
What really pissed me off about that scene is that moments earlier the bus had been cruising next to a flatbed trailer with a convenient ramp on the back. It would have been just as easy to film the truck pulling ahead and stopping just before the gap and the bus using the ramp.
Sure, it would still be impossible in the real world, but I could have stretched my suspension of disbelief that far.
I saw Saturday Night Fever for the first time since it debuted when I was about 10. The dumbest scene is how John Travolta’s character brings a date to this club, and then dances with himself for a long, ~20 minute segway. What the hell is that? (If curious, it’s perhaps the best known and best spoofed scene in the lame movie.) It was good for 10 year olds…
Have you ever, EVER seen a straight guy get up to dance by himself? C’mon! Real guys don’t dance! …They pretend to like to dance as a social ritual to meeting chicks.
Speaking of Mission: Impossible… I’m not sure which movie it was, but they Good Guys and Bad Guys are fighting on top of and around the Channel Tunnel train as it races across the countryside towards the Tunnel. You can see the sea in the distance. I think there was a helicopter involved as well.
Where the *^%$ are the overhead electric train wires? The whole crew should have gotten tangled up in 25-kilovolt 300-km/h mayhem, bringing the train to a screeching halt.
And if you say that the train is using the old low-speed lines in Kent, which used third-rail power and didn’t have overhead wires, then those lines acquired overhead wires before they entered the tunnel–before the big terminal place where they drive the cars on, in fact.
I could suspend my disbelief for the whole helicopter-is-dragged-though-the-tunnel thing much more easily than I could for blatant factual errors like that.
Now, that`s unfair, pointing at stupidity on MI (any of the 3) is like shooting fish on a glass of water.
I went to see the first one with a bunch of friends and by the time the helicopter was flying inside the tunnel we were in a collective fit of laughter; the whole theater didn`t even mind, everyone was laughing their asses off.
Red light, green light!
Then there’s that stupid helicopter thing in one of the Bond films - “Tomorrow Never Dies”, I think - where some bad guy in a hovering 'copter decides to total Bond with the rotors and so tilts the thing forward until it’s nearly vertical and it continues to hover in place.
And helicopters fly how, exactly? :smack:
In the Lord of the Rings when Legolas rides his shield snowboard/skateboard/railgrind style down the stairs while shooting arrows at orcs.
In Speed when a large bus jumps a large section of highway-less with a small ramp that had no business being there, followed a non-logical arc, landed nose first, yet continued forward without losing speed or sustaining front-end damage.
In Point Break when Special Agent Pappas says “I’m so hungry I could eat the ass out of a Rhino”.
helicopters are frequently the source of technical screwups, the last Underworld flick has the badguy being kicked into the spinning blades of a helicopter. They’re still spinning after it falls through the roof of a castle, falling 150 feet or so, and are still capable of la machine-ing the bad-guy. (btw, don’t notice that the blades are attached to a solid shaft, instead of the swash-plate mechanism all helicopters have.)
I still liked the motorcycle in M:I with the magic, reconfiguring, tires. Knobby in sand, magically slick on pavement.
In the Name of the King: A Dungeon Siege Tale has several Hall of Shame moments. I watched it and have returned with my report. 
WHAT?!?!?!
Why didn’t anybody tell me Jodi gets naked? Now I have to buy this movie!
Timeline is a really stupid movie. Really really really really really stupid. The stupidest part was when the producers decided to make the movie.
I rented Timeline out of curiousity. Pepper Mill sat down and said “I’m leaving as soon as this gets stupid.”
She was gone in 15 minutes. She said last night that it was getting stupid before that, but after 15 minutes it was too stupid for her to stay.
Well sure, but they were flying first class.
Actually, I found a clip on youtube, amusingly dubbed in Spanish. It appears they were sitting directly in front of a bulkhead, so no one behind them could see what happened.