I just recently got a copy of Flash MX and thought it'd be fun to try my hand at some animation. I've never tried any animation before other than flip books so don't be surprised if it seems rather amateur.
Looks pretty damn smooth. I'd personally say it hits inbetween amateur and professional.
Perhaps a bit more motion across the body would look better?
The only real mistake that I can see is that the chin doesn't move smoothly like the rest of the face, sort of flickering during the mouth's down position. The fold line connected to the chin could use better spacing to make it move more smoothly.