Movie plot hole thread: summer 2008 edition

Cafe Society
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In which Dopers list, discuss, argue over, and mock plot holes in this summer’s movies. Any movie which opened on or after May 1st is eligible. Oh, and box your spoilers.

I’ll start with Hellboy, which I saw yesterday:

At the end of the movie, Liz destroys the magical crown necessary to control–or even animate–the Golden Army of the title. Why didn’t she melt down Blonde Arwen’s section the second they acquired it and were not in the middle of a battle? The only person who has any use for it is the elf prince (or, as I prefer to call him, Evil Legolas); it beggars belief that neither she, Kraus or Abe immediately thought of it.

While we’re at it, why such a rush to go to Blonde Arwen’s rescue? They know she and Evil Legolas suffer each other’s wounds; therefore, she’s in no particular danger while she’s in his hands. He can’t kill her without killing himself.

Off topic–did anyone else get a Flowers in the Attic vibe from the Wonder Twins?

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Also from Hellboy:

Why didn’t the princess kill herself at the beginning of the movie to stop the prince from killing her father? So she cared more about saving Hellboy than saving her own father?

From Last Crusade:

So they needed the crystal skull to open the door where the other statues with crystal skulls were hidden - there was no other way to get the door open without it. How did the original Conquistadors get in there to steal it to begin with?

Hancock:

Why did Charleze Theron expose herself to everyone by throwing Hancock through the wall of her house, and later by flying around in a busy street, creating tornados, and generally destroying things while fighting Hancock? I thought she was trying to be incognito.

Note: Though I thought of these at the time, I may have also heard them from my friends, or read them somewhere, or read them in threads here. If the latter, no offense to anyone whose posts I may be adapting.

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That one doesn’t bother me.

She simply lost her temper, which she clearly has to work to control. On some subconscious level, Hancock knew how to push her buttons.

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Wall-E (yeah, yeah, I know):

Whenever he scoops up trash into his little compactor-thingy, the volume of the stuff is the same coming out as it is going in. Shouldn’t the cube be substantially smaller?

Get Smart:

Why doesn’t Max’s Geiger counter go off when he’s standing near Agent 23 on the helicopter pad?

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Mamma Mia!

A girl who’s 20 in 2008 was supposedly conceived sometime in a several week timespan when her mom slept with either a 60’s hippie or a 70’s punk.