Hi there,
some of you probably know the test images Nicolas Huillard provides at http://nicolas.huillard.net/vdr/tv_test/
I created some of them, but as there are so many resolutions out there, I decided to write a little tool called 'tig' that creates test images in high quality for any resolution you may need.
Have a look at http://tig.bulix.org
Note that tig is in a very early stage, may contain lots of bugs, and provides only two different images at the moment. But this will change rapidly....
have fun, Michael