I've actually been on a few triple-language flights on Delta. From JFK to Brussels they had both Flemish and French-speaking crew. From JFK to Tel Aviv, they had Hebrew and Arabic. It was impressive.

Unlike Continental, Delta does have Swedish-speaking crews for its flights to Stockholm. But I agree, pretty much everyone--including cats--speak English in Sweden.

I recently flew on Northwest to Paris, and they had no speakers on board. I asked a flight attendant; she said that they have no speakers on European flights.

The best was Pan Am. I remember flying them to Honolulu as a teenager. They had announcements in English and Japanese for a domestic flight. Furthermore, the purser bowed every time a Japanese passenger boarded or disembarked. Amazing.

Incidentally, I happen to think that many of the speakers are nicer flight attendants. Continental has really nice Hebrew-speakers (Alon), and Portuguese-speakers (Nelson, Sandra, among others). For whatever reason, they tend to be more cheerful and outgoing--maybe it's the higher pay.