The Lorax Movie came out on March 2, 2012 which also happened to be Dr. Seuss' Birthday. If you haven't already seen it here is a review of the movie from Entertainment Weekly :
"Chris Renaud, the codirector of , turns the 1971 Dr. Seuss book into The Lorax, a candy-colored feel-good anticonsumerist musical. It's got a winningly whimsical Seussian spirit, though it could have used a pinch of his doggerel-driven anarchy. (Seuss' brilliantly playful language? Not there.) Zac Efron nicely voices Ted, a boy who wonders why there are no trees in Thneedville. His foray outside the city walls leads him to the Once-ler (Ed Helms), a hipster who found a paradise of trees that look like furry lollipops, then cut them all down to get rich. The movie is like a less original , but it's still vibrant and touching. B+"