We used a lot of time trying to create a reasonable flag blowing in the wind In 2D and the results were not that good. So the first time we saw a simulation of a flag blowing in the wind (created in Blender, bless them) it simply blew us away too. With a simple set-up of a few parameters Blender produced a digital flag that looked way, way better that our puny experiments.

Below is a test video where we compare the 2D and 3D experiments in the same frame. Judge by yourself...