Yes, I am! Im taking it as an elective (extra class) in university. It's fairly difficult, but I have a good teacher, which helps a lot! Its going fairly well, I can hold a basic conversation and write a small amount in chinese characters.
I decided to learn chinese for a few reasons. I've always had a desire to travel in asia, which I hope to do next year, and I figured it would help. Also, china is an emerging super-power, so having chinese may be a bonus for future employment. I have to say, Im enjoying it so far, but wouldnt recommend it to people who wouldnt commit to it. Ive been learning for about 6 months.