Weird stuff happens at trade shows
If you have five minutes and forty seconds (and a strong stomach for the just-a-little-pathetic) then you might enjoy this riff from a Microsoft event. The last six seconds might be worth the whole thing, or not. Thanks, Oded, for sending it along.
If you produce materials for trade shows, it's important to remember that just because someone is sitting in an auditorium, it doesn't mean that their standards for entertainment, video or content have been mysteriously erased. They remember what they saw on TV last night, and they probably realize it was a lot better than what you're showing them now, no matter how much you spent on it.