Warforged
Warforged are basically an excuse to play a robot in a fantasy campaign. They are simmilar to golems but differ in the fact that they are sentinent creatures, created by magicaly coagulating metal and wood in a vat.
This player race came about with the advent of the Eberron campaign setting for D&D and since then gained considerable popularity amongst the gaming comunity (which Dragonborn will never live to see). Surprisingly enough, Warforged are generaly quite popular on /tg/.