During Spring Roundup 2008, our local cannon specialists treated us to an exhibition of their creation, a bowling ball cannon.  Thanks to Reuben McCoy Rankin and Garrett Cade for the fun.  Beware -- the videos below are very large files.  I would not suggest trying to look if you are on a dial-up modem.

The AVI files are larger but better quality.  If your computer won't play the AVI files, try the WMV files.  If your computer won't play them, I can't help you other than to suggest you have the latest version of Windows Media Player installed.