I read the post where some kid let go of a helium balloon at a convention, and everyone was watching it. When I used to attend the conventions, I loved distractions. I always heard multiple "pssst" sounds from people opening cans of Cott cola. I loved it when there was an "unruly" child sitting in front of me. I loved it when birds would fly into the convention center (waiting for it to poop on someone).
What were some of your favorite distractions from the boring talks?