I don't think anybody has said "Heroes" yet.
When I first saw it, first clicked to watch it, I thought it was going to be a very corny show I wouldn't even get through the first episode. Once you get watching it, you're hooked. It's hard to not keep watching episode after episode to find out what happens next. Anyway I was surprised how much I liked it, when expecting to not like it at all.
These next 2 are not shows but I recommend everybody watching them, they could change your life for the better.
"Food Inc" and "Fat, Sick, and nearly Dead".