Corrected entry: Watch the window carefully at the final climactic battle/escape in the film, inside the army outfit's mansion. There is a quick shot (which requires using the forward button in slow motion) of the rain "falling" upwards as the shot reverses. Simple editing error.
redbaron2000
4th Jul 2004
Correction: The rules of this site are quite straightforward - if you have to use slow motion to spot a 'mistake', it is invalid.