Continuity: Season 2, episode 8, "Four Months Ago". When Maya is arrested, she starts manifesting her powers on the policeman. In a close-up, we can see the black ooze coming out of her eyes. Cut to a shot from above, when the policeman's eyes turn black and he drops the handcuffs, and Maya's cheeks are suddenly clean again, with no trace of the black stuff. (Time) Submitted by Twotall

Continuity: Season 2, episode 11, "Powerless":. In Mohinder's kitchen, when Sylar cocks the hammer of the gun he is holding on Mohinder, he is holding the gun with his arm straight and the gun completely level. The angle changes just as Sylar says "Maya, I need you to stay calm", and now his arm is close to his body and bent so the gun is pointing at Mohinder at an upwards angle. There was no time for him to move his arm in between shots. (Time) Submitted by Twotall

Continuity: Season 2, episode 10, "Truth and Consequences": In the previous episode, "Cautionary Tales", when Noah was brought back to life he regenerated, then sat up, looked around him and said something sounding like "Home". In this episode, when the exact same scene is shown, we see Noah regenerating and sitting up, but this time he just looks straight ahead before lying back down, and does not say anything. (Time) Submitted by Twotall

Visible crew/equipment: S02E09 - When Claire runs away from Bob after he calls her "Ms. Bennet", you can see Bob's shadow and another person's shadow on the ground. Since no one else was standing next to them, it has to be a crew member, most likely a camera man based on the odd shape of the shadow. Submitted by Mortug

Continuity: S02E01 "Four Months Later". When Claire hugs Mr. Bennet she is holding her note in her right hand. In the next shot as she turns around and runs off to school the note is in her left hand. Submitted by Mortug

Continuity: In episode 211 "Powerless", Maya's necklace disappears between shots when she accuses Sylar of killing her brother.

Continuity: Season 2, ep. 2, "Lizards". When Alejandro finds Maya outside the tunnel, she has black ooze from her eyes running down her cheeks. As he starts his healing, we get a close-up shot of how the ooze fades and disappears from Maya's face. But in the next shot of her face, when she falls forward, the black stuff is back on her cheeks. It's gone again in the next shot of her. (Time) Submitted by Twotall

Visible crew/equipment: S02E11 - "Powerless" When Mohinder, Sylar, Maya and Molly are at Isaac's old flat (now Mohinder's lab), as Mohinder and Sylar walks down the stairs, you can see the moving camera crane reflected in the glass behind them. Submitted by Mortug

Continuity: Season 2, ep. 3, "Kindred". When Peter gets the box with his belongings back from the Irishmen, as Caitlin says "Well?" Peter's hands are in his lap. The angle changes to Peter, who answers "Well, what?" and he suddenly has both hands on the box, with no time to move them between shots. (Time) Submitted by Twotall

Plot hole: Chapter One, 'Four Months Later': The police say they have found Angela Petrelli's fingerprint on the photo of Kaito Nakamura, who had been pushed off the top of the building. In the scene where Angela handles the photograph when she is with Kaito, she is wearing gloves. Submitted by Jeff Walker

Factual error: In Season 2, Episode 3, Peter and the Irish family rob the bookmakers and the security guards shoot at them. In Ireland, even the police don't carry weapons. let alone do security guards. Submitted by SexyIrishLeprechaun

Visible crew/equipment: S02E01 "Four Months Later". As the samurai warriors are about to engage the attack, a close-up shot of Hiro turning around reveals the white screen reflected in his glasses. Submitted by Mortug

Continuity: In episode 211 "Powerless", right before Sylar shoot Maya, you can see she already has a bullet wound on her chest.