Graphic designer Emily Lakdawalla has created the best presentation slide / poster of the Solar System that I have ever seen. I tried this myself once, but mine was crude and amateurish by comparison. Emily's is the real deal. It captures in gorgeous detail diversity of planets that we now know exists in our neighborhood.
Slide-worthy images and a high-res poster version (complete with planet names) are available here for download. The poster can also be purchased in 16"x20"($18) and 23"x35" sizes.