Cut People out from Background

I wonder how'd people done this?

yesterday i want cut me out from this ugly background, but i don't know how, tried Extracting in Photoshop CS but not work very well, actually terrible, can't deal with my hair....so i just post a pos on DPChallenge, someone done this for me, check it out, it's a great job i think although it have more room to improve on hair and right hands...but he done this cost less than half an hour, what a magic, soon i'm out from that old drom background and in this blue black mixed background....i will keep an eye on this, this is fun to do and useful i think...so if you know anything about this, drop me a message


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