I've scheduled a demo of the QS8s on Saturday. The person that's coming is only interested in surround speakers for now. He also said that he's not interested in multi-channel music. I'm looking for DVD suggestions of movies that have good use of the surrounds. Here are some DVDs I'm planning to use:

Gladiator
Golden Eye
Lion King (using the new Home Theater soundtrack)
Matrix Reloaded
Star Wars: Episode I

Any other suggestions?