Here's an interesting vid: how to go from fish to big freaking reptile in less than five minutes, all through the power of a Nine Inch Nails musical score.
Or...maybe that wasn't the message exactly. I get confused easily. Sorry.
Anyway, it reminds me of another shorter video that tells the same story in reverse, only it's slightly more realistic in that the driving force behind it all is not Trent Reznor but beer. So.