It's Voldemort as Harry saw him while boarding the Train in the 5th movie:
The doll is only available through FWA Swartz. Here is the description:
“he wears a black twill suit, complete with black dress shirt, black waistcoat, tie, black knit socks, and molded shoes to and an appropriately sinister expression, captured in evil detail by Robert Tonner. He also holds a wand, which is crafted in resin with hand-painted details. With 13 points of articulation, you can display him in many poses with the included display stand.” The Doll is 19” in height which makes him in perfect scale to the 17” high dolls of Harry, Hermoine and the 17 ½” high Ron dolls also from Tonner. The Doll is a limited edition of 150 for $150.00. tax and shipping included.
He is due 12/04/07. Mine has already been pre-ordered.