Get yourself a copy of "The Haunting" with Liam Neeson and report back about the LFE there. That's the first DVD off the shelf when it's time to show off a bit.
I dislike Liam Neeson so much that I don't know if I can pull the trigger! Cars (Disney/Pixar) is very good for surround/LFE as well. And it's a helluva movie!
I'll have to put that Russell Crowe (Masters/commanders) on my Netflix list though.