You HAVE to, and I mean HAVE TO see this.  This is by far the most amazing thing I've ever seen with CG (computer graphics).

I'm just learning how to do green screen effects. You know what that is, right? You stand in front of a very ugly green screen and then you can insert video or still pictures into it as the green becomes invisible to the camera.  That is the extent of my technical know-how right now.  So if anyone can explain how THIS was done, I would like to know!!!  This features a very nimble Chuck Norris. VERY NIMBLE!!

Is that not the coolest thing you have ever seen?  There are so many brilliant computer nerds out there.  I would just love to be a fly on the wall and see how they did that.  (Maybe he did it for REAL!)

If you want to see something similar in terms of "how did they do that?" computer work, go see "Gravity" with Sandra Bullock and George Clooney.  That made my jaw drop.  So did this little clip.  I hope you like!