http://www.tvfanatic.com/2013/09/breaking-bad-exclusive-vince-gilligan-teases-heart-attack-conclu/
"I think these last three episodes, not to overstate it, and you could say this about the last eight, but with these last three in particular you need to
install a seat belt on your sofa, you need to wear a crash helmet and a diaper.[laughs] I tell ya, this next episode (entitled “Ozymandias”), I think for my money, is the best episode we ever had had or ever will have. It was written by Moira Walley-Beckett and directed by Rian Johnson. I think people are going to have trouble breathing after this thing airs. It’s tremendous and it’s a great, great hour of television and I’m as proud as I can be of the two episodes that air after that one and both of them are a hell of a wild ride, too. I couldn’t be more proud of these final eight episodes or these last three episodes. I think they’re going to leave us with some sleepless nights.”