Breaking Bad. I heard I'm not the only one who started watching it and gave up after the first 2 or 3 episodes that were just setting the scene at a fairly slow (boring) pace. Someone had to convince me to push through them because it gets so much better. It does.
I will be the dissenting voice then. Knowing what it is, I started watching it, and watched all the way to something like mid-second season. But then I just stopped and didn't really miss it.
BB for me was one of those "ok, last episode... ... ... OK, now really last episode then bed... ... ... OK, I know I have to wake up in 5 hours, so now really, REALLY last episode then bed." And so on.
In my opinion it is the best written show in history. It has a succinct arc and every character is there on that arc for a reason. It ended when it should and kept true to the story the entire time.
I had a chance to read the pilot pitch script for Breaking Bad and it was one of the best I have ever read. Was the reason I started watching the show in the first place.