Powerpoint is a great invention. You get a professional looking slide show that's easy to make. I wish 80% of the people that used it didn't just stare at the screen and read exactly what the class can already see. I could understand if you were teaching a class of illiterates but at the college level, I'd guess most of the people in attendance have a solid grasp of putting vowels and consonants together in order to fashion words. What is the presenter there for if they're not going to deviate one syllable from what is written on the screen? They might as well leave the room while everbody reads silently to themselves.