Here's the intro I made for him posted on What Comics' youtube channel...
Cerebus Intro
I had made this background for the text and logo to stand atop of. This is a Photoshop composite of 2 different parchments with 2 different boarders edited together.
Turns out Mr. Simonsen liked the background so much, that he wanted one to be featured in the final version of the film. So I went to work making another parchment background that would be AOK for commercial use.
And here it is. This one was made by combining 7 different parchment images together. The boarder was drawn myself, but based off some sort of medieval mosaic pattern I found.
These were even featured on What Comics' own blog for the film.