Thinking back to the demo scenes I used to use when I was in the trade....
Swordfish - definitely the explosion scene, but more for the dynamics and streering than just the trouser flapping LFE. There is also the car chase scene, with plenty of gunfire and a nice climax!!
House of Flying Daggers - the "drum & beans" scene, which is a great one at reference level on a system that can handle it. This is particularly great for upper bass, mid-range and some very detailed top end.
Either of them, on the wrong system, can sound pretty nasty - but on a good system can be very impressive indeed.
There were others, but more for bass than anything.