I'm really good at suspending disbelief and overlooking ridiculous plot holes with a "Well, they've got to keep the story moving". Sometimes, though, the writers/directors make such idiotic mistakes, they poison the whole thing.
I started watching The Silent Sea yesterday. It's a Korean sci-fi thriller starring Bae Doona, and it should be right up my street. In an opening scene, the spacecraft has crashed and Doona slides off the broken ship, which overhangs a crevasse. One of the crew members strains to hold on to her, barely managing to maintain his grip.
The Moon's gravity is one-sixth of Earth's. She can't weigh much over 60kg on this planet - pulling her up on the Moon would be no harder than lifting 10kg of shopping. She could've pulled herself up with one hand!
Now I'm watching for all the bloody stupid low-gravity and wrong-temperature errors, have already spotted several, and don't think I can get into it. What idiot mistakes have ruined the story for you?