As Alex Stein illustrated in his article about the time warp of television, TV starts again. Be it the new freshman comedies (New Girl) or the dramas (Persons of Interest), the sophomore and junior ones (for Drama: Hawaii Five-0 and Comedy: Modern Family) or the ones that are still going strong (NCIS, The Simpsons), TV demonstrates what people want to see and what they don't. To see that so many comedies are topping the Neilson ratings each week demonstrates that we (as America) want to laugh and have fun, we don't want to sit around and watch serial killers like in Criminal Minds. But then the one show that is consistent for comedy (Two and a Half Men) has been, rather, a disappointment with the new casting (but that isn't for me to tell). Still, drama like NCIS still has the top ratings.
I guess all that I am saying is, we TV watchers like consistency and the same thing. Try to throw a curveball at us, and we won't watch. It's how we live: we like what we like, and vice versa.
So, enjoy your TV shows and see if they make the cut for next season.