Languages you know, are planning to learn

Hey lang,

what are the current languages do you know? what are you planning to learn?

I'm thinking of learning French, and then Chinese for the hell of it.

Partial thread hijack.  How hard/self-defeating is it to learn several languages at the same time?  I'm a native English speaker and I know a fair amount of spanish, but I'm moving to Japan in a few months and want to know how bad I'll fuck myself up if I try to learn Spanish and Japanese at the same time.