I apologize if someone already suggested this one, but I'm not going to read all these responses to make sure.

I have a Bushcooker LT and it is awesome. It weighs about 3 oz., fits in a pot, and you can use any fuel you want. Most importantly, the stove works great with wood. You can easily go on extended tour and never worry about carrying or finding fuel. Just take a few solid tablets for when everything around you is wet, and other than that, just use wood and other debris.

http://www.fourdog.com/index_files/bushcooker.htm