Attention art history students (a.k.a. the majority of Vassar): Professor Andrew Tallon was featured on "Building the Great Cathedrals," a special for PBS's NOVA. The program aired on Tuesday, but you can check it out here. Professor Tallon is shown 19 minutes in as part of a "team of scientists" that brings in special equipment to survey a cathedral.
"Murray enlists the help of Andrew Tallon, a medeival architecture specialist, to scan every nook and cranny," the narrator says. The professor actually speaks a lot during the segment.