Was that irony or did you seriously manage to avoid all the announcements? lol
I think Germany actually has the largest contingent: Voigt, Klemme, Gerdemann, Wegman, Robert Wagner; then you have Denifl, Zaugg, Cancellara and the Schlecks whose first language is either German or at least pretty close, and Torsten Schmidt the DS.
You also have a lot of Italians though: Bennati, Vigano, Nizzolo and the DS's Guercilena and Baffi.
Also quite a few Danes: Fuglsang, Lund, Mortensen, Pedersen and of course Brian Nygaard and Kim Andersen.
2 Australians (O'Grady and Clarke), 2 Dutchmen (Stamsnijder and Posthuma), 2 Belgians (Monfort/Wallonie and Weylandt/Flandres), 1 French (Feillu) and 1 Portuguese (Bruno Pires)
I think the main language will be English, or at least should be; so that no cliques form inside the team. I know that Andersen and Nygaard also speak German, but the Australians, Italians and French surely don't. Plus, O'Grady will be the road captain and he probably doesn't speak German (just an assumption).