The gloriously-named ZaziNombies YouTube channel creates LEGO versions of video game weapons, among other things. Somehow they have gone five years without building Doom's famous BFG 9000. Maybe it just took them a while to gather the 5,000+ bricks.
With the multiplayer beta for the latest Doom in full swing, ZaziNombies (almost as fun to type as it is to say) finally tackled the beast. While many of the weapons they have recreated have had highly detailed 3D models to work from, the BFG 9000 is made of sprites. Approximation was the order of however many days it took to assemble this, and it worked out nicely.
It's not the most practical weapon, but then it was never designed to be something you carried around for very long.
Check out the Big Freaking LEGO gun (BFLG) in action below.