For the list of spiders you don't like, you have to decide that yourself. I block: vscooter (Altavista Images) fast Googlebot-Image These are bots that attempt to cache my images, which I don't like. Other people block other bots.
As an alternative to blocking a useful robot such as fast, you can also put all of your "proprietary" images into a subdirectory, and then disallow that subdirectory. Example: User-agent: fast Disallow: /images/