This is my take on a UCS-style model of the Imperial Probe Droid from The Empire Strikes Back. Lot of fun (and occasionally frustrating) to build. It's an interpretation, really... the organic curves of the original probot's head don't seem particularly possible with Lego. But hopefully it's recognizable.
Curves always throw a challenge for Lego building - but this guy is instantly recognizable, so you clearly nailed it. You did particularly nice work with those arms, bro - I'm impressed.