Dirty Tricks of Presentors

A reader writes "Perl expert Mark Jason Dominus gave a great talk last month in St. Louis on how to give a good conference presentation. There's nothing specific to Perl, and a lot of people said they thought it was the most useful talk at the conference even though they didn't think they'd be doing a conference presenation any time soon. Mark also wrote up some notes that explain the parts he forgot to put on the slides."