Dalek halloween pumpkin

I'm getting quite excited about Halloween already, I've nearly figured out what my costume is going to be and I've got party invites racking up. Well, two. The only thing I need is some inspiration for my pumpkin, and inspiration comes in the form of Evil Mad Scientist's Dalek pumpkin, it's geekalicious! It looks like a lot of work, but the end results are more than worth it especially as it actually moves around in the same eerie manner as a Dalek...Scary!