I'm trough with the Portal 2 single-player-mode. It was fun, tough short. I agree that the test chambers are more fun, than getting behind the scenes, but I'm definitely going to replay it a lot.

I'm really happy with the german translation and voices. Wheatly is dubbed by Tobias Meister, one of my favorite Voiceactors, who has done the voices of Brad Pitt, Jack Black, Robert Downey Junior, Kiefer Sutherland, Gary Sinise, as well as Darth Maul in Episode I and Yoda in Episodes II, III and Clone Wars (both series).