I've calibrated my system using a sound level meter to make sure the levels are all as they are supposed to be. That being said, with a lot of movies, I'm a bit disappointed with the surround use. In general the level seems a little low and I think a lot of transfers just don't make good use of the surrounds for whatever reason (budget, attention to detail, talent, etc).
A few movies have stood out for me though.
Star Wars Episode II: Attack of the clones: In addition to some really strong bass during one of the landing sequences, this movie has a few scenes with the most active surrounds I think I've ever heard. In the battle between Obi Wan and Jengo Fett on top of the tower, the surrounds are amazing. The water sounds are a nice backdrop, but the real kicker is when Jengo's rocket pack breaks loose and flies around. It does a complete circle around the room, hitting every speaker in the process. It sounds great!
The Lion King (Disney Special Platinum Edition). This one has an alternate audio track they say is "enhanced" for home theaters. Boy is it! The surrounds are super active with jungle sounds and effects. Some people complain that they are too loud. I'm guessing that some combination of my having calibrated my system with a meter *and* the fact that I use dipole surrounds (as opposed to direct or monopole) makes this sound very nice on my system. It's also a great, fun movie.
Those are the only ones I can think of at the moment.