yeah, this seasons has had more plot-centric episodes than most.

Maybe being IN the season, people are forgetting that every season has this ratio or higher. 8 out of 20 episodes have been "monster of the week" type show, which is the same ratio as the first 20 episodes of season 5, and 2 less than season 4 (which has a 10 to 10 ratio. 9 to 10 if you count the smith and wesson episode as plot-centric.)