Fontspring announced their bestselling new fonts of 2012. Which would be good choices for your presentations? Breakers Slab (which we’d recommended a few weeks ago and is still on sale) and, if you want to mix it up a little, Veneer (which is on sale for just $29).
Below are some sample slides that use Breakers Slab. It’s easily readable at a distance and comes in several weights, which allow variety and contrast.