The movie was great! A lot of people didn't like the ending but I thought it was appropriate and can't think of another way to end it.
What won my love for the movie were two things:
1) Anton Chigurh (Javier Bardem) was probably the best bad guy to ever be in a movie. Either him or Hannibal Lecter.
2) There was no music score - it was all ambient noise. Beautifully done.