Firstly, thanks to everyone who entered, this was by far our most popular competition on DVD Box Sets, with well over 1,000 entries! The correct answer to the question, “In Avatar, what was the name of the mineral humans were trying to mine on Pandora?” was c. Unobtanium
The winner selected at random from all of the correct entries is: David Kerr from Sterling, Scotland
Congratulations to David, we will be passing your details onto Play.com who will send the prize to you very soon!