Digital Film tools have EZ Mask 1.0, a tool which is designed to make extracting practically any object from a background. The tool works by allowing you to sample the areas you want to keep and those you don't. Once these areas are selected EZ Mask then calculates a transparency value for every pixel in the image allowing EZ Mask to efficiently remove the unwanted areas. EZ Mask makes the process of removing unwanted backgrounds pretty painless. It retails for $150 and DFT has special pricing available for existing DFT plug-ins owners. Visit the EZ Mask home page for more info.