I went a little overboard with the top-10 lists this year (last year I only did two), but people seem to like them…
Ten Renewable Energy and Energy Efficiency Stocks for 2009
Ten Speculations for 2008 (Update)
Ten Great Clean Energy Investing Blogs
Ten Most Controversial Stories of 2008
Ten Speculative Clean Energy Stocks for 2009 (forthcoming, link will be broken until 1/12/09.)