Ha, I didn't even notice he said it in English when I watched it. That just went right by me. Good question though. I just checked the Wolfgang Peterson commentary on the DVD and according to him the actor was actually drunk during that scene, smashed in fact, maybe that's why.
I haven't watched Sophie Scholl yet, and I think the Downfall was a great documentary with a truly chilling Hitler. Either mister Ganz is an incredible actor or someone I wouldn't ever want to be around. There are some other great movies, too. Das Experiment for example (which I can recommend to anyone with an inrested in foreign movies) and Lola Runs are both really good movies in there own ways.
For me personally though, while Das Experiment and the Downfall had an emotional impact on me (mostly being pissed off) and Lola was an intresting and exiting flick, none of them were that at-the-edge-of-your-seat experience Das Boot was.