I was just sent a promo piece by Epic Systems on their visualization system called Trend Compass. With a brief examination, it creates bubble charts and includes a time slider on the X Axis that allows you to control a simple time animation. Nice for some kinds of time-dynamic data. You could argue that it over complicates data presentation when that is not needed. Worth a look. Here an example I liked on US employment and another on the stock market.
' ... TC is a new concept in viewing statistics and trends in an animated way by displaying in one chart 5 axis (X, Y, Time, Bubble size & Bubble color) instead of just the traditional X and Y axis. It could be used in analysis, research, presentation etc. In the banking sector, we have Deutsche Bank New York as our client ... '.