Actually I have tried to give Person of Interest a shot twice now. Twice, I have lost interest. (ba dum tish) Although, every episode seems important... in the last 10 minutes when they solve the plot of the week and extend the overall storyline further. The first season was very similar to Agents of SHIELD, albeit it was not nearly the dumpster fire the first half of the first season SHIELD was.
http://io9.com/5958702/how-to-get-in...ion-show-on-tv
It seems like I could just watch the 1st and last 10 minutes of every POI episode and be just fine. Except for those every few episodes where the whole episode is devoted to the major storyline. (Like a cable show)