Sorry to be geeky and also bring up an old debate but it's going to perhaps have an offical answer soon:

http://news.bbc.co.uk/2/hi/science/nature/4789531.stm

Is it a planet? Yes/No answers please. Then we can count up the votes and see if the result matches the The International Astronomical Union's one. And you all know how fun that would be.

I say "No".