If, like the little dude up there, you're wondering what's this oddly proportioned, flip-flops clad blue surfer is doing on such a serious blog, that means you never laid eye on Motionbuilder. At least not before version 2012. Well that weird guy is as helpful as he is ugly. He allows you to select (almost) any part of the rig without having to click it in the viewport, which can come in handy in many situations.
Anyway, trying to reproduce this for the 3dsMax Biped was the first thing I ever did in MAXScript !