The Lost World: Jurassic Park (1997)
While I admit that if the escape from Isla Sorna was the actual action climax, it would've been anticlimactic, nothing compares to the bullshit San Diego ending. Nothing about it makes any sense.
For starters, Spielberg expects me to believe that Peter Ludlow would actually try to bring a T-Rex into the mainland. This is beyond stupid for three reasons. The first is that Ludlow came to the island to collect some of the least dangerous dinosaurs he could. Second, the park hadn't even been fully completed yet, meaning that he'd keep a dangerous T-Rex on premises until the park was completed. And third, didnt he just come off an island where he experienced near death almost every step of the way? Having just gone through the horrors of Isla Sorna should've made him even more cautious about which dinosaurs to bring if he was still considering such an absurd idea.
My next problem is with the transport of the T-Rex in the first place. Did the crew really just keep the T-Rex inside the ship without any harnesses or additional security measures? I understand that the creature was tranquilized beforehand, but did they really just leave him unrestrained?
Then there's the matter of the deaths of the ship's crew. What. killed. them.
We see their bodies all over the ship, yet no sign of what exactly did the damage. Could it have been the T-Rex? Absolutely not, as it would've had to have secured itself back into the ship after the killings for that idea to make sense. Could it have been dinosaurs from the island as the ship departed? Absolutely not, as that would mean that the ship somehow found its way to its exact destination without any living person steering it. So then the last question would be: Could some dinosaurs have killed the crew right before they arrived in CA? This makes little sense as well as that would mean that the dinosaurs somehow did not get noticed by the crew until nearly arriving in CA, and even if that were the case, where the hell did the dinosaurs go? Did they manage to take down an entire ship full of people without any of them being killed? If some were killed, where are their bodies? Where did the dinos go after killing the crew? Wouldn't they have stayed on the ship to continue feasting? The movie gives no explanation to any of this, leaving a huge plot hole.
Lastly is the execution of the T-Rex rampage in San Diego. It's so rushed, and of so small a scale. Everything is shot so tightly, never giving the full scale of a dinosaur running loose in a majorly populated area. We see a handful of people running away, a bus being knocked over, and a dog being eaten, but nothing that shows a real mass panic. It all feels so empty.
That entire ending is just one huge wtf sequence.