Craig, You being a comic book art aficionado, I voted for
The Incredibles, but
Finding Nemo would be a great choice as well. Another I'll recommend, if you can stand the genre, is
Open Range. Great surround sound with the rainstorms and the gunfight, and some stunningly beautiful scenery.
Another off-the-wall suggestion, and one with which you may be familiar, is the IMAX Documentary
Beavers (hold the wisecracks, please). Visually stunning, remarkably done, and very interesting (to me, anyway) as well.