Umm...German, I guess, it should be easy peasy picking that up since my native language derives from German and Hollandaise. It's probably just said as Hollands, or that's what I think, but Hollandaise sounds so much like mayonnaise, it just rolls off the tongue...=)
Another language I have to get a grip on is Chinese, I don't know which form of Chinese yet, whatever the one is the most of them speak here so when I order fish and chips I can do it in their language and spare both me and the cashier AND the manager the hassle of trying to puzzle out what the other is saying.
AND, Maori. Not that I know any Maori people, but it's the second most spoken language, aside from English, here in NZ, so it might do me well.
Languages I would like to learn are French, Portugese and Norsk.