Not quite taxidermy... but still ... Daniel Firman 's elephant Würsa stand still and upside down on her trunk. The pachyderm could only manage this delicate exercise at a distance of 18,000 km from the earth.

Why not check out the gallery, and see the best, worse, and craziest pieces of taxidermy.
[go to gallery +]
Prof. Burnaby Q. Orbax's fur-bearing trout. According to Orbax's website, the species is "native only to the most Northern parts of Canada and the United States, where the cold water currents require the fish to grow a peach-like fuzz around areas of their body with little blood circulation. These furry coats 'molt' prior to the spring thaw, and therefore spotting a furred trout is a rare occurence. This specimen was caught by an ice fisherman in Gaspe."
http://www.fiendishcuriosities.com/viewitem.php?selectItem=34