Presentation skills are one of the most important capabilities for a Dark Manager. You have Guy Kawasaki spewing the 10/20/30 rule. Clearly specifying that a presentation slide should typically be not more than 10 slides long, last no more than 20 minutes and have fonts no smaller than 30.
Then again, through horrendously bad presentation meetings, you have this. The clip below summarizes presentation hells that I go through on a daily basis.
Or as Ram Charan says it, if you have to put your points across via Powerpoint there’s something fundamentally wrong with your communication skills. Quite obvious considering the amount of lies a Dark Manager hides and having the viewer look at the slides avoids them from figuring you out through Neuro-linguistic Training your eye movements and body posture.
I’ve also personally attended training on presentation which teaches synchronicity in hand movements and speech, and the rule of not making analogous movements or in layman’s terms, moving your hands and arms the same way every time you come to a point.
And then you have this, a classic example of overdoing hand movements.
Anyhow, practice enough and you’ll be able to lie through your teeth without flinching.