Norwegian
British English
Old Norse/Icelandic
Swedish
Japanese
I'm fluent in three of these languages. Not surprised that Swedish is mentioned so often, but Swedish, Danish and Norwegian are practically the same. Grammatically there are only some slight differences between them, yet their pronunciation can be different. To me, it sounds like the Danish have a potato stuck in their throat. And Swedish is very 'sweet'. Tests results reveals that it's easier for a Norwegian to understand Danish and Swedish (pronounciation wise) than for them to understand Norwegian. Yet the Norwegians and Swedish understand each other better. I find it easier to read Danish than Swedish, yet easier to understand Swedish than Danish when they speak.
Regards, Yvonne