Finnish, Swedish, English
And just to get the list longer I'll add Germany, Latin, and Russian even though I don't know them enough to order a pizza (not that I'd like to do that anyway..)
Then of course the languages my best friend understands: C/C++, x86 asm, Python, Lisp, and a bit of some others
Markup languages count, too, don't they: html, lilypond, TeX
Hmm..