All about hobbies

What is your hobby? Would you suggest a hobby for me to take up?

I have a lot of free time nowadays, and I'm looking for ideas about what kind of hobby I could get into. I've never been able to keep up with one hobby or activity for very long...I tend to get tired of things quickly. But, I want to be good/skilled at something so badly!

So, what do you do with your free time? Any suggestions for a 25 year old male?