My overall impressions of Berlin, which shouldn't be taken too seriously because of the nature and duration, is that is very much an industrial city. I guess its good to have seen a little bit of it, but overall I greatly preferred Munich.
On Saturday afternoon, I caught a flight back to London in order to get my kit together for the Tough Guy (www.toughguy.co.uk). I met up with the guys from Thames Crossfit (not Central London, where I normally workout) and we drove for a few hours North to Wolverhampton in the tiniest station wagon I've ever seen.
I am going to do a separate write-up for the Tough Guy, but in brief: it was miserable. The most fun I NEVER want to have again. They have perfectly figured out how much suffering and abuse a human body can take and that is exactly how much you go through. Hopefully, they will post action pictures in the next couple of days for me to share.