That is awesome! How big is it ? Was it something you made or found an image of online ? I am wondering how much effort would go into making my own...
@Adam1 A guy in the UK makes them. I think what he chages is very reasonable, but unfortunately shipping to Australia costs a fortune. Prices and shipping here - http://www.burnedbydesign.com/4/prices-and-shipping.html
If you have welding skills it might be achievable? @Brad - who's on the front page at the moment - is a welder so he might have some advice for you.
Looks like a gas bottle was used looking at the base.
Hardest part is getting the cheeks right.