Bad Powerpoints

In this age of technology, many professors rely on powerpoint - this can be great for subjects with alot of detail but really bad for professors who don't know how to use powerpoint effectively. 
Bad Powerpoints:
1) Presentations with too many words, to the effect that the presenter actually reads the powerpoint to you.  Sadly, we can read faster than they can talk, so they have become useless as a presenter.
2) Powerpoints that have super decorative backgrounds are very distracting.  In my presentations I have always been told to use very plain and simple backgrounds, as to not distract from the presentation.
3) That said, a powerpoint with only words and no graphics is very boring to the eye. 
4) Text in a powerpoint should be bulleted, not long sentences.  A powerpoint should be an aid to the presenter and listener - a presentation should not be word for word on the slide.
5) A presenter should keep eye contact with the audience and not just talk while looking at their powerpoint.

Powerpoints can be great tools when used correctly.  In classes and other lectures I've been too, powerpoints are basically necessary because of the vast amounts of imformation given, including graphics and charts.  The professor then can use these slides to supplement what they are teaching us and keep our interest through pretty pictures :) .  Also, powerpoints are very useful when a professor posts them before class so you can print them and take notes directly on the powerpoint slides.