The tape over Grizard's mouth has been redone for the final post-credits scene, much more nicely than Veronique originally applied it.
Sparks would not come out of the back of a jukebox when someone falls against it.
It' s not made clear when the events of the film take place, but one assumes it' s contemporary. Jack' s British passport is the old blue one which were replaced gradually from 1988 to 1998.