Saw this first season in college and at a Emerging Green Builders get-together. Quite inspiring and informative. I recommend everyone to check it out, you can a few episodes here http://www.design-e2.com/ . I think the first season is available at Netflix to rent.
back to Swiss Re in London, it's supposedly a very energy efficient building - quite a good thing since buildings make up 50% of the world's pollution. Not too sure about the Torre Agbar
I played the game for about a few hours and I think you should return it and wait till it gets cheaper. It's a game worth trying out, but for 50 bucks? I don't know about that. You just don't get as much creative fun as you can with SimCity 4.