I put the Haunted Mansion DVD in my iBook and discovered that it had interactive DVD features that worked with Macs. In fact, it included a .dmg file that contains a Mac DVD player application.

You can download the current version of this DVD player at http://player.interactual.com/default.asp?code=MAC

It plays any DVD, but also accesses special features on the following DVDs:

Harry Potter and the Chamber of Secrets
Matrix Reloaded
T3: Rise of the Machines
Matrix Revolutions
Around the World in 80 Days
The Haunted Mansion

If you have any of these titles be sure to try out this DVD player to access the extra video features.