Houston had to be the underdogs going into this series, so they're making a lot of people (like myself - Houston in 6) look smart. That said, they're not dominating by any stretch, and if STL wins game 5 I think they could easily turn around and win game 6 back at home, and then it's a whole new series.
A Houston-Chicago WS will be great for those of us who like pitching duels, but outside of Clemens' starts it'll probably tank on the coasts.