Continuity mistake: While talking to Claire outside the diner, Noah comments that he's looking forward to seeing her at the homecoming game. But in season 1, Noah knew Sylar was going to try and kill Claire at homecoming and had forbidden her from going.
Add timeCubs Fan
Continuity mistake: The second time Hiro goes to the rooftop and tries to save Tadashi he has ink on his face from stopping the photocopier from working. However when we cut back to him from Tadashi the ink has vanished, then when we do get the next shot of him the ink is back on his face again.
Add timeDavid Hutchinson