Card stacking genius Bryan Berg:
http://cardstacker.com/projects_venetian.html
On the left hand side of the page you can click on individual photos, which are several of Mr. Berg's card stacking "projects". At the bottom of each initial photo are more photos you can click to view. Under each description is a video link. I uploaded a couple of photos. The first is of Bryan Berg's 44 Day Guinness World Record Project.