'Felina' Ratings: Record breaking 10.3 million viewers. The previous high was 6.6 million for 'Granite State'.
Adam Rifkin stashed this in Breaking Bad
Stashed in: Netflix
Just to put this in context, the season 4 finale only had 1.9 million viewers and that was considered good. And I don't think the show went above 3 million viewers ever during the first four seasons and the first half of season 5.
Highest prior to Season 5-A was Box Cutter, which drew 2.5; every other episode prior to 5-A was under 2 million. Every Season 5-A episode had between 2-3 million viewers, none over 3M. The lowest rated episode of Season 5-B was Rabid Dog which drew 4.4 million.
This progression is INCREDIBLE: http://en.wikipedia.org/wiki/List_of_Breaking_Bad_episodes
Note the 10 million doesn't include DVR people, people who downloaded, etc. Amazing.
Still smaller than the biggest Walking Dead episode (12 million viewers).