I have a sculpt of my ex-wife...

But as I wish to stay in your good graces I would recommend any Napoleonic with a French style shako and epaulets sans back pack painted red jacket with blue trousers. I'm going to have to research which figures fit that description.

A Call To Arms French Infantry

French Line Voltiguers would be great if you don't mind the busby.
French Light Infantry Marching

Officers might work too; they have the epaulets and perhaps one could paint the other details.

I think the 1st figure in the 8th row down of this Strelets set, Prussian and Russian General staff, would make a good nutcracker; even better if you move his arm down by his side. The last figure in that row might be interesting too.

http://www.plasticsoldierreview.com/Review.aspx?id=492

Probably not easy to find now but the guy with the portfire in this LW Portuguese artillery set would make a nutcracker with a minimum of fuss:

http://www.plasticsoldierreview.com/Review.aspx?id=847

I'm assuming that you want nutcracker figures that just look like nutcrackers rather than nutcrackers that have come to life as in the ballet.

I notice some of the guys on TMP recommended the Airfix French Infantry, pictures here:

http://www.plasticsoldierreview.com/Review.aspx?id=44

You could also maybe take a look at the officers in the old Italeri French Infantry set.

http://www.plasticsoldierreview.com/Review.aspx?id=191

Some repositioning of limbs required.

If you want nutcrackers that have come to life just look through the Napoleonic sets on PSR, you'll be spoiled for choice.