Nice movie-like video. :)
First, I have to disagree with the guy below. Sometimes flash doesn't have to incorporate every scene with complex animation in order to catch the viewer's attention. I believe this series has that of the "moving" camera to show some sort of suspense and reaction among what's going on in the background. What's also good with this is the fact you switch between the third-person view to the first-person view when needed. This series really catches your attention with all those little details.
There are some cons to this though. I do have to agree with the guy below that some frames could have been more polished and the shadow line on the stick characters don't have to be there ALL the time... because there isn't a "light" in that direction every single movement on the character.
Aside from that, it's an overall great series. I haven't gotten to watch them all fully, just given myself some time to see what's been up with this popular series. A lot of props are given to you with the smooth animation of the stick characters. Man people can't pull that off with stick animation. Nice work!