Continuity mistake: At the beginning armored truck scene. Marcus blows the armored car with shape charges. After the doors pop Marcus' shotgun is flashed with a drum style magazine. However, when Marcus squares off in the next scene with police he has a mag style.
Audio problem: When Donnie is grabbed after leaving the Federal Reserve there is an audible sound like a fence is being hit, but the concrete barrier is front of the fence, and Donnie is never seen pushed into the fence.
Answer: Considering how microwave ovens work, it seems it would. Microwaves work by bombarding whatever is inside with actual 'microwaves' which works to excite the water molecules within. Paper, and in the case of cash, cotton, wouldn't be affected on its own but the water inside would be. Ever had something wrapped in a paper towel when you microwave it? The cash is not metal, and the water content is what gets heated up inside and evaporated, so I believe it would work.
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