November 17, 2008 2:50 pm Top 5 Green Celebrities NBC’s “The Buzz” runs down About.com’s top five environmentally-friendly celebrities: George Clooney, Cate Blanchett, Robert Redford, Cameron Diaz & Leonardo DiCaprio. US & World Videos 1:07 Britney Spears spotted as authorities respond to alleged hotel incident 2:15 Prince William and Kate Middleton ‘going through hell,' friend claims (report) 8:01 Lady Gaga's outfit changes, Rihanna's bold looks and more iconic Met Gala moments 1:59 TikTok's Maddy Baloy dead at 26: Gordon Ramsay and Tay Lautner pay tribute 3:04 Progress being made on demolition of overpass on I-95 in Norwalk