It’s Block Block Blockography, it’s a freeware font (not for commercial use, you know.) Created in 2011 by Måns Grebäck – a great typeface designer and logo artist (from Sweden?) – Blockography is a nice, fun, sketchy bit of fontery with slabby fun block serifs. A bit kiddish maybe, a bit fun, but pretty catchy on a poster perhaps, or something where you want a casual take on a blocky slab face. Download the TTF.