Kinetic Typography

Kinetic typography—the technical name for "moving text"—is an animation technique mixing motion and text to express ideas using video animation. This text is presented over time in a manner intended to convey or evoke a particular idea or emotion.

http://www.youtube.com/watch?v=D91xdNwRfHI&feature=related

http://www.youtube.com/watch?v=iwIy0enG6uU&feature=related

http://www.youtube.com/watch?v=ui4umNt72RY&feature=related

http://www.youtube.com/watch?v=4FlcS9_LXho&feature=fvwp&NR=1

http://www.youtube.com/watch?v=PaM5CXIVGiE&feature=related

http://www.youtube.com/watch?v=O6aWSBSEgVk&feature=related