In the words of that kid Jin from back in the day "You Gon Learn Chinese"
But yeah: Chinese(mand); thai always seemed like a cool language, everytime I watch a thai film it seems like their grammar structure is similar to English, I could be totally wrong about that though. I've got 5 years of French under my belt, mais c'est terrible, the grammar kills me but I want to be fluent for when I'm in Africa one day. Other than Chinese and French Russian is pretty cool. Maybe Spanish just because it's so widely spoken.