One of my old rigs for shooting above life size.
All Canon gear: Xti + 62mm of extension tubes + 100mm macro lens + 500D diopter. Magnification: 2.75x life size. Minimum working distance is 7Cm (2.75") from the edge of the flash to the subject at 2.75x, and the max is somewhere around half a meter (the 500D causes the maximum distance to be 500mm).
MR-14EX ring flash (notice that I have it turned so that one ring is on top of the lens and the other is on the bottom).
Novoflex Chest Pod with the neck strap and camera mount removed. Really Right Stuff 25mm ball head mounted to the chest pod. Normally I use it like a gun stock, but I can swing the whole thing down and use it like a miniature monopod if I need to.