The problem with PPs are that they become the presentation itself, and that lends to delivering information, and data dumps. In most business settings it’s almost like reading a manuscript as someone puts up PP after PP and uses them as his/her notes. Too many bullets and too much text. (Rule of Thumb with PPs – less is more!)
Use black slides and transform your presentations. A black slide is literally a slide with no master and a black background. (It is not the “B†key which will blank out a slide, but you always have to unblank, and go back and show the old slide before you can continue on.)