Just curious. When we see someone handwriting (on TV or in a movie) are we seeing the shot flipped ? I mean if they are right handed do we see them as left handed (or vise versa)?

I actually don't think so either.  See, I'm left handed and commented that it seems that the percentage of actors that are left handed is higher than the general population (apx. 10 percent).  My daughter (25) insists that its because on film it's flipped.  I really don't think so but I can always be wrong.