Steel Stallion

I tend to be an advocate for sorting by part instead of color, but then along come builds like Grantmasters' War Horse that make me reconsider. See how many different LEGO weapon parts you can find in it. I spotted at least 18, making this the most well-armed horse I've ever seen.

Teensy Tiny Space Battle

There have been lots and lots and lots of interpretations of the iconic X-wing and TIE fighter over the years, but I don't think any quite as tiny-yet detailed as Grantmasters'. Even if there's one I'm forgetting, six and three pieces to a ship, respectively, is pretty darned impressive, and the greeble background works quite well given the small size.