1. Ellen Page: Vanishing of the Bees Frazer Harrison / Getty Images, Dogwoof Pictures Ellen Page narrates this thrilling look at the economic, political and ecological implications of the worldwide disappearance of the honeybee. You'll learn to really appreciate bees and cherish the work they do for us all.Watch the trailer here and the full documentary on Amazon, Google Play, YouTube, FMTV. 2. Tilda Swinton: Galapagos Jon Kopaloff / Getty Images This documentary takes you through Charles Darwin's view of the Galapagos Islands and the inspiration for his theory of evolution. Oh, and Tilda Swinton voices the whole thing, too. Swoon!Watch the trailer here and watch the full documentary at Amazon. 3. Forest Whitaker: Food Chains Jesse Grant / Getty Images See what happens when Florida farm workers launch a hunger strike at the headquarters of Publix supermarkets. Plus, it's narrated by Forest Whitaker — what could be more soothing? Watch the trailer here and watch the full documentary at Amazon, iTunes, VUDU, Google Play, and YouTube. 4. Jamie Lee Curtis: Dirt! The Movie Valerie Macon / AFP / Getty Images, Gaia This movie — narrated by Jamie Lee Curtis — will more than likely change the way you think about the ground you walk on every day.Watch the trailer here and watch the full documentary on YouTube, the Google Play store, Amazon, and iTunes. 5. Ed Helms: PENGUINS Roy Rochlin / Getty Images Ed Helms narrates the internal monologue of a five-year-old penguin named Steve in Disneynature's newest offering, PENGUINS. It's brand new, so you can't stream it YET, but you can watch it in theaters now. 6. Oprah Winfrey: Life Pascal Le Segretain / Getty Images, BBC Earth In 2010, Oprah narrated this Discovery Channel series that originally aired on the BBC. About the series, she said, "I marvel at the beauty and wonder of nature and am in perpetual awe of the miracle of life in all forms, so to have a chance to lend a voice to the symphony of Life was an opportunity I couldn't resist."To watch, buy an old copy on Amazon or sign up for Discovery Life. 7. Leonardo DiCaprio: The 11th Hour Isaac Brekken / Getty Images, Warner Independent Pictures Leonardo DiCaprio produced and narrates this look at the changes our generation (and those before us) have put upon the planet. It's alarming but important.Check the trailer here and watch the full length documentary at Google Play, Amazon, iTunes and YouTube. 8. Sean Penn: The Human Experiment Jean Baptiste Lacroix / Getty Images, Kino Lorber Sean Penn narrates this honestly-pretty-scary look at the untested chemicals in everyday products and the battle against their use.Watch the trailer here and watch the full documentary on YouTube, iTunes, VUDU, and Amazon. 9. Sigourney Weaver: Planet Earth David Livingston / Getty Images, BBC Sigourney voiced the American edition of the 2006 BBC series (sorry, all you lovely international people). She also has given her voice to the Discovery Channel’s Why Dogs Smile & Chimpanzees Cry as well as the BBC’s Gorillas Revisited.Watch the trailer here and watch the full movie on Netflix. 10. Bill Nighy: Meerkat Manor John Phillips / Getty Images Follow meerkat matriarch Flower and her family as they try to survive in Africa's Kalahari Desert. Sean Astin voices the first two seasons in America, and Bill Nighy narrates them all in the UK and Canada!Watch the trailer here and watch the full documentary at Amazon, Animal Planet. 11. Meryl Streep: A Fierce Green Fire Jeff Spicer / Getty Images, ZAP Zoetrope Aubry Productions This doc looks back at the past 50 years of global activism and just may spark a fire inside of you. Meryl Streep lends her voice to some of this doc, too.Watch the trailer here and watch the full documentary on iTunes and Amazon. 12. Kenneth Branagh: Walking With Dinosaurs Tibrina Hobson / Getty Images Let the man who played Hamlet in such an iconic way take you through a six-hour series about dinosaurs when they walked the earth. Fascinating! Watch the trailer here and watch the full documentary at Amazon, iTunes. 13. Morgan Freeman: March of the Penguins Kevin Winter / Getty Images This journey follows emperor penguins in Antarctica as they go through their highly unique mating rituals, narrated by Morgan Freeman. Watch the trailer here and watch the full movie on Hulu and DirecTV.