I hate it when people simply read off their PowerPoint slides when giving a presentation. It's especially aggravating when these folks are highly educated. Gagh!
Amazingly, one friend of mine said that she tends to be more receptive to vendors who give terrible presentations. She said that she thinks this means that the speaker must be highly intelligent, and that this must mean that their product or service must be worth considering. That is some of the dumbest logic that I've ever heard.