Are we only allowed to choose 1? (My god I'm such a geek!)
Excluding the ones I actually did (eng, maths, sciences, german, re, pe, history and geography)
I would want all of the languages including the dead ones, most of the humanities (not economics - doesn't really interest), law, sociology, photography, extra Maths (yes I'm a geek), archaeology, astronomy - actually doing this next year just for the hell of it, Nutical Studies and Outdoor Pursuits.
Edit: I obviously know that many GCSEs would never have been possible in 2 years, I just like the subjects and would like to know more about them.