What do you hate the most in a Presentation?

All the time we think from the point of view of a presenter. I should do this and I should not do this. But remember that other than being a presenter you are also an audience. Why not learn from others' mistakes? So the question I have for you today is:

"What do you hate most in a presentation?"

Think as an audience. Try to remember the last presentation you saw. What did you dislike most? The amount of text on the slides, font size, template, sleepy voice, spelling mistakes, lack of passion, etc. etc. To reply leave a comment on the blog or mail to vivek [at] jazz factory [dot] in.

Interesting answers will find a mention on the blog.