Dividing this up into current and past might make it a little simpler.
My current/recent favorite TV show is The Big Bang Theory. I can't help but laugh out loud as I watch! I DVR episodes just so I can watch them again and again. Really helps bring a smile to my face on a gloomy day! I am embarrassed to admit that I've probably seen every episode thus far. (Except this week's episode, still haven't watched it, but it's on DVR!) My two favorite TV shows from the less-distant past are Friends and Gilmore Girls. And yes, I've seen every episode of both of them. I can quote both, too. And I never get tired of the reruns (though there are a few Friends episodes that I've seen so many times....) I wish I lived in a town like Stars Hollow, I loved the small feel of the place. Oh, and the banter between Lorelei and Rory didn't hurt, either.
As for overall most favorite shows? These
Ok, so I narrowed it down to six, not too bad considering the list spans 30 years!