I would reccomend Digital Video Essentials. Check out bargainflix.com and they'll give you the best price.
The menus are a little difficult to negotiate at times, but it's pretty minor. They've got more test signals than you'll ever need.
And they've got some really great demo stuff to not only set up your system but to become educated about phase, stereo, front back separation, etc. - really just kind of fun at times. I have lent my disc out to more than a few friends who tweaked their system for just a few minutes, and then just enjoyed listening to the disc for its video and audio madness...
