Power Points That Make Powerful Points - Learning By Looking

I am using the power point projector more and more lately.  You know, bring the classroom into the 21st century.  Replaying the lesson or the important aspects of the lesson assists with comprehension.  When it's flashing and playing over and over and over again, class period after class period, one cannot help but remember the information.  I find that the students are alert and attentive as they watch.  They are engaged and enriched for part of the most part.