In the season 6 episode called 'Sight Unseen' (or something like that), at the end in the aeroplane storage when O'Neill puts his hand on the guy's shoulder, it's away from his neck. Then the camera changes to look at O'Neill and his hand is touching his neck. Then the camera goes back around to the first view and O'Neill's hand is away from his neck again. Does O'Neill have special powers or something?