that looks really cool i like the tail. although the tail does look a little stiff sometimes although i dont think thats the point of the anticipation exercise.
some nice motion overall maybe accentuate the anticipation a little with a tad more squash or stretch is all i would say.
wow what a coincindence i recently tracked some footage and was planning on doing the same ... im going to have to make something new now :S.
btw could you upload the video on putfile ? the 15 user limit is really inconvenient.
edit: what did you use for tacking ?