I just stumbled upon this recent short animation by John Christian Ferner Apalnes in which he nicely uses the Strata-cut animation technique to visualise his signature. It's pretty basic but simply demonstrates what can become a very complex animating process.
Strata-cut animation, also spelled stratcut or straticut, is a form of clay animation, itself one of many forms of stop motion animation.
Strata-cut animation is most commonly a form of clay animation in which a long bread-like "loaf" of clay, internally packed tight and loaded with varying imagery, is sliced into thin sheets, with the animation camera taking a frame of the end of the loaf for each cut, eventually revealing the movement of the internal images within. Wax may be used instead of clay for the loaf, but this can be more difficult to use because it is less malleable.
Pioneered in both clay and blocks of wax by German animator Oskar Fischinger during the 1920s and 30s, the technique was revived and highly refined in the mid-90s by California-Oregon animator David Daniels. I've also included a video montage of Strata-cut animation created by David Daniels as an example of just how complex the animations can be.
For a great deal more info (as well as more video) on this fascinating animation style check out this interview with Daniels from June 2009: