I've noticed a trend among grad students when preparing slides for their presentations that there is a tendency to spend lots of time making the slides pretty, but giving little thought to how well a slide conveys the content of the information it is supposed to convey. Cramming about 5 graphs into one third of the usable space in a slide (leaving the rest for superfluous "design" elements) not only makes the slide difficult to digest but also shrinks the figure's text to an impossible-to-see size. Please get out of the habit of doing this if you want your professors and fellow students to stay awake during your talk and not be fantasizing about jumping out the window. If you are unsure whether your slides are up to snuff, I'd be happy to take a look at them a few days before your talk and give you some pointers.
-Cranky Prof. N