Greenpeace "Guide to Greener Electronics" league table (full PDF scorecard report), which "ranks the 18 top manufacturers of personal computers, mobile phones, TV's and games consoles according to their policies on toxic chemicals and recycling."
As you can see, Toshiba and Samsung are leading the pack towards the green; the next group is Nokia, Sony, Lenovo and Dell, with the next being Sony Ericsson, LG Electronics, Apple, FSC and HP. Motorola are just about in the red, while companies like Acer, Sharp, Microsoft, Panasonic and Philips are in the definite red, and Nintendo is at the bottom. See the Greenpeace page for summaries of who they think has improved or got worse on the environmental / eco-friendly front, and why.
Via Heise Security.