Best movie to see what your HT AUDIO will do.

Triple X. I like the whole movie, but I've shown the avalanche scene about 15 times or more.

Master and Commander is the best I've heard to date to show how good (or bad) any system is performing. I think this is because so many of the sounds are so familiar to us all, especially the weather sound f/x. For an old audiophile who has tested 2-channel systems with Telarc's canons on their nefarious 1812 Overture, it seems that good there is enough bombardment in M & C to really see how realistic one's TV system can sound. I'm running a Pioneer SC-27 with Ice amps to an all Infinity Interlude system that includes a 12" self-powered sub in each of the 2 fronts. The room correction feature is very good, especially after tuning the subs with their own RABOS toolkit, but I need access to a lot of ballistics to point out things that rattle and shake in the house to keep everything sounding good.

Prometheus was called as the best Bluray in sound and image in 2012. It is stunning in the low freq.

"Last of the Mohicans" (1992) directed by Michael Mann.
Spacious, airy Dolby soundtrack. Really good!

In addition to U571, which as indicated would be my go to, especially if I was a "subwoofer salesman", but I would also add "Cowboys and Aliens" to the above suggestions.