Look at what my daughter pulled out of a cereal box the other day:
Yes, Pluto. Thankfully she gave it to me. It is a great addition to my office.
Pluto has been getting a bad rap since the IAU demoted it from planet to a dwarf planet. It still is a pretty interesting place. If you are interested you should read 10 Things You Don't Know About Pluto from the Bad Astronomy Blog.
If you want to learn more about the world that helped to demote Pluto, you should visit Mike Brown's website on Eris.
Just a couple of weeks after the IAU made their big vote in 2006, Tom Jarrett was observing on the 200-inch Hale Telescope when he photographed Pluto (arrowed) next to a trio of stars that strongly resembles a certain mouse that Pluto the cartoon character is associated with. Coincidence?
For anyone who is looking to learn more about the mythical "Planet X", I strongly recommend this resource.
By the way, today is my 6th anniversary of working here at Palomar Observatory. It has been a good ride so far. I am honored to be here and look forward to continuing to expand our public outreach programs.