Analyzing the Physical Correctness of Interpolated Human Motion
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A really good paper. This paper discusses the question "So, we  
are just interpolating motion, and results look nice... But,  
are the results physically correct?"  
This is a really good question. The authors proceed to analyze  
several positions and see what the result is. (like jumping, foot skating...)  

Surprisingly, the usual method of interpolating motion frames  
does NOT produce physically correct motions.  
However, we can make interpolation produce physically correct  
motions using a few tricks.
For example, to avoid linear momentum problems while jumping  
we can interpolate the position of the center of mass of the  
body instead of the root of the skeletong. This simple modification  
makes jumping physically correct.  
  
The other point is foot skating. Clearly, our current methods  
cause foot skating to happen (That is why we got all those papers  
talking about correcting foot skating! :)).  
The authors propose a different interpolation scheme, where we interpolate  
at different joints of the skeleton to make sure foot skating does  
not happen.
  
  
This is a nice paper. The major question is, "Is there any reason  
why NOT to use this scheme?". Because if there are no reasons, then  
why are we using any other thing?