haha, definitely gotta have a functional chair. The control sticking out is for adjusting up and down. The knob underneath is for tilting the chair back, the part you sit on. I didn't see anything for tilting the back but I can easily add another control.
dont office chairs usually have 2 or 3 of those lever controls? one for up and down, one for the tilt of the back of the chair and sometimes one for the tilt of the part you sit on
mean clock too, loving the hands. is the face just texture mapped?