I first noticed him when he won the Lange-Taylor Prize in 2006 with writer Larry Frolick to document underclass life in the Ukraine. I'll just add that he's having quite a productive couple of years recently having also won a Guggengeim in 2007 and further being included in January as a "network photographer" at VII (what does this mean anyway? Is this how they're getting around their original charter that limited them to 9 photographers?)
He's got great work. See for yourself
I'll also just add that I was greatly relieved to see that PDN got his age wrong - He's 34 not 26. I'm feeling less unaccomplished now. Phew.