At yesterday's Disney expo D23, Pixar fed the fandemonium by announcing two all-new movies now in production. This year marks the animation studio's 25th anniversary, and judging by yesterday's offerings, their innovative spirit shows no signs of fading. The first film they unveiled explores what the world might have been like if dinosaurs were never wiped out by a giant asteroid, but continued to exist on Earth. Director Bob Peterson, a longtime Pixar story artist and the voice of characters like Doug from Up, is helming the movie. He said Walt Disney's animatronic dinosaurs, which he first saw at the New York World's Fair as a child, inspired the idea. Bob shared one still with the audience, but the finished product won't arrive in theaters until Holiday 2013.

The second movie will take a look inside the human mind and explore the reasons why we get songs stuck in our head, why we dream, and even why we remember. Not many details were revealed about how scientific, or fantastic, Pixar's approach to the subject matter may be, and the effort is clearly in the early stages — the movie won't be released until Spring 2014. For more details on the rest of the 2012-2014 animated Disney films previewed yesterday, just read more.