Corrected entry: After the robbery is completed, Danny followed the SWAT team out presumably in the uniform. There is no way he can change out of the uniform fast enough and get back to the room where Bruiser (the man who's supposed to beat up Danny) is and continue the act of being beaten up.
Corrected entry: An electromagnetic pulse fries any electrical circuits that are in the blast radius, which means that electricity would not come back on at all; the bomb would not just shut it off then back on.
Correction: The pulse was only supposed to disrupt the electricity for a time, which it did. Now how they "scientifically" effected this reaction is the real mystery.
Corrected entry: After discovering the thieves in his vault, Terry Bennedict (Garcia) turns to Mr. Walsh and whispers "Make the call" [to the police.] Near the end of the movie, when a flashback is shown of the same scene, Bennedict says "Make the call" in a much louder voice and Mr. Walsh brings the phone to his ear much more quickly than before.
Correction: It's not a mistake. It's a flashback, it is how he is remembering it in his own head.
Correction: Danny probably climbed back up the elevator shaft and went through the same ventilation system that he did to break in, while they were packing up as the swat team.