I'm learning Gaelige, which is the Irish word for Irish Gaelic. I've been learning it since around 6, and it's quite difficult. I've become amazingly used to the pronouciations which other people would find difficult to pronounce. The spellings are awful hard too, but I'm used to those as well. Overall, it's a pretty good language to learn. It's mostly fallen into disuse though.
I also study German. I started 2 years ago, when I was 12. I'm quite good at it, and again I'm good with the pronounciations and spelling. But the Der/Die/Das etc. things are so friggin' impossible! I don't even see the point in them. But I guess all languages have annoying little things in them.
I'd LOVE to speak Spanish. It's just so refreshing to hear, and Spain is my favourite country and I go there almost ever year, so it would be nice to be able to talk to people in Spanish.