Here's the website of the "Last Supper" quilt by the dentist. ;-)
http://thesupper.net/index.html
The quilt is 67" high and 183" wide.
The website it a bit awkward, but it has a lot of information, including the how'd-he-do-it and 2011/2013 travel schedule of the quilt.
I saw it at Houston back in 2000. AMAZING.