Re: What do you dislike about The Dark Knight?
It looked to me like Dent was trying to wiggle loose of the binds he was or probably even try to break the chair and he just simply fell over and knocked over the fuel can in the process.
That's what I got from it too. That it was accidental. That and the liquid fuel that toppled over and managed to only wet half of his face was merely coincidence and perhaps...fate.
"Please... We need you to hope again... " - Professor Charles Xavier, X-Men: Days of Future Past