Plot hole: While planting the suicide gear in the bathroom before Buckley comes in, Cooper tells Josh to tie the rope into a noose as they go to hide in the shower. Josh replies that he doesn't even know how to tie a noose. He must be a quick study, because in the 45 seconds or so that it would have taken Buckley to relieve himself and wash his hands, Josh has tied a perfect noose.
Audio problem: When the crowd is gathering around Cliff after he falls from the balcony, you can hear a lot of the same background dialog being looped over and over. Some of the easier ones to spot are guys yelling "Right there, man." and "Where is it?" and a girl yelling "Stop." Those three can be heard distinctly at least three times.