I have to admit, I've never heard of "mood scale" before I saw this pic, but I dig the concept. Building on what has classically been a mecha platform to create characters, I like it! Flickr user M<0><0>DSWIM
brings us these sweet MOCs, and there's more to view on his photo stream. After learning about it I also found this...
It's got an awesome pose, great likeness and it's an overall amazing MOC.