Which should you do first, Brush or Floss?

Should you floss before you brush, or floss after you brush?  The first time I heard this question I had to laugh.  It reminded me of the chicken or the egg dilemma.  Which came first, the chicken or the egg? See Wikipedia on this discussions.
I prefer to floss then brush, but I have heard some convincing arguments on why it’s better to brush then floss.
I was reminded of this question when I stumbled across this blog in the New York Times.  The question can be asked, should you brush before you eat or brush after you eat?  In this blog, they give a convincing argument on why it may be better to brush BEFORE you eat.