I really dig these little super-deformed Iron Man figures. (Called H.E.A.D. (High End Artistic Deforme)) Looks like they might even have some articulation to them, too.
The other figure that was shown by Art Spirits at the show in Japan was the upcoming 6" War Machine figure from Iron Man 2.
Definitely amazing stuff, but Art Spirits stuff tends to be a little too pricey for my tastes.