I like this list of characters created to exemplify different kinds of speakers you want to avoid being – but the best part, to me, is it was created to pass the time while surviving a bad presentation.

One of my favorites to read about (and least favorite to experience firsthand):

Oscar Overtime (Thomas Too-much): Oscar is in some ways the extreme opposite of Umberto – he prepares way more material than he has time to deliver. Consequently he ends up going over his allotted time. He’s mastered the art of ignoring frantic signals from meeting moderators and cues from annoyed audiences. He’s prepared all that wonderful material and he’s going to deliver it (all), come what may.

What I like about Oscar is that the core of the problem, like so many bad presentations, is he had himself in mind when he made the presentation – yet the point of a presentation is your audience, not you.