Do home theater test discs exist?

As an audiophile, I have my share of stereo test discs with the usual well-recorded songs, tones, phase checks, etc. Where can I get similiar discs for home theater?
This is probably the best of them:

though the Avia is good, and the Sound & Vision is not bad, either.
* Avia
* Ovation from Sound & Vision (essentially the same product as Avia for substantially less)
* Video Essential