Continuity mistake: When Peter and Claude are invisible and walking in New York, just after Claude has released his hold on the T-shirt rack, they bump into a man in a coat. Cut to a different angle, showing the two on camera, and the man in the coat is gone. Instead there are two girls and a man with glasses walking directly behind Peter and Claude, none of whom were there a split second ago. (00:02:05)
Other mistake: After Peter falls on the cab, a piece of metal is sticking out of his chest. He pulls himself off it, but when he's on the hood, the piece that was sticking though him isn't there, even though it should be visible.
Continuity mistake: In the scene where Sylar and Mrs. Bennet begin to talk, she becomes suspicious about his interest in Claire. When Mrs. Bennet picks up the phone to call her husband, Sylar visibly moves his finger to use his telekinetic power right before the angle changes. In the next shot, Sylar again does the same motion with his finger, but this time the phone is removed from Mrs. Bennet's hand.
Chosen answer: Hiro's powers are still quite unreliable, and a locked closet door isn't a huge obstacle. Since Hiro knows he needs to rescue Ando, it's probably safer to try and bash the door down than risk teleporting to the wrong place or time.