Electronic devices aren't the easiest things to get rid of, at least not responsibly. Luckily the "How-to wiki" at Wired Magazine has tracked down some recyling programs from manufacturers and other sources.
They begin with Best Buy, which is able to accept all sorts of electronics for recyling, most at no charge. And what they do charge for is offset with a Best Buy gift card.
They also highlight the website Gazelle, which pays for the item if it has resale value, and for the shipping if it doesn't. Check out their list of what they accept.
The article even outlines the recyling programs currently in place with such manufacturers as Apple, Canon, Dell, Sony, and much more.
And don't forget the EPA itself, which encourages the recycling of electronics by offering basic information, linking to state and regional programs, outlining regulations and standards, and more.