Another One For Your Science Science Staff: Exosolar
A Graphical and Speculative Guide to Extrasolar Planets
Change the current focus of the application by clicking on the star you would like to see in more detail.
On a similar theme:
Link: Extrasolar Visions - An Extrasolar Planets Guide
This site will [among other things] allow you to see the sky as it would appear to you if you were on a planet orbiting a different star [a star of your choosing]