Last year I had the opportunity to see the Late Show with David Letterman. He’s a Hoosier ya know (http://www.in.gov/visitindiana/about/famous.aspx).   We were instructed to clap when the APPLAUSE sign lit up, act like he was the funniest person we’d ever met, and be quiet at all other times, including: don’t leave your seat, don’t shout out, and don’t chew gum.  So you see, after doing my primary research I’m now qualified to present to you my own version of the Top Ten List (so this is what would be called a “secondary source,” right? Right!). 

 Feel free to clap, or boo, to leave your seat, shout out, or chew gum!  I can’t see you from here.