First, he was large.  I have no problem at all with large people, but as I plugged in his flash drive he was already breathing hard and the presentation hadn't started.  Next he set himself up as the premier expert on the topic that he was presenting:  "I'm the king of a word starting with 'k' (I protect identities).  Expectations are now high for a large man who is chest breathing. 

He began to walk through the product.  Some nice slides.  Information that I wanted but he was turning his back to us and reading from the screen, pacing toward the screen and then away again.  I became distracted.

The other thing that I noticed was that the people who were with him looked uncomfortable.  They would glance at me and other members of our company almost as though they were expecting us to challenge something.  Or maybe they were just wondering if we noticed the sweat that was gleaming on his chin.  Was he going to stroke out?  Is he okay?  "blah, blah, blah," he said something. 

This is a true story.

Five minutes into the presentation, I am making more notes about his presentation than his product:

1. Don't read from the screen
2. Don't talk about a medical product when you look like you could die at any moment.
3. Talk to your team.  Tell them to signal you if you need to wipe sweat from your brow or chin.  Tell them not to look uncomfortable during your presentation.
4. Don't tell people that you are the king of anything; if you are, they will figure it out.

He wrapped up his presentation and came to the whiteboard to lay out an "irrefutable value proposition."  Wow.  I actually liked the product but he made me not want to like it.  Then the jargon starts:

"Get me on the phone with your producers and we'll close the deal.  I'll even go knee to knee with them just in case you don't want them all in a room cat fighting."

His boss started to transition the presentation and he cut the man off mid-sentence to explain the application process - more awkward looks.

It was a clinic on what NOT to do.