So all that build up for the ricin, and it ends up going to the most tepid, boring, who-gives-a-**** character on the show(that isn't Walt Jr.).
Overall, it was kind of a mix for me. I guess I was always going to be a little disappointed because Uncle Jack and the Plot-zis felt beneath the show, but there just wasn't quite the epic feel to the ending. Lots of fan service. I'll give them a pass for Badger and Skinny Pete and the awkward flashback to cram Dean Norris onto the credits. But Jesse's ending makes no sense whatsoever. He's finally got his freedom...except for the fact that he's completely broke and wanted for all of the felonies.
Still a lot of good stuff that worked though, and overall, a really good show. Watching good chunks of the marathon helped me remember why this show was so good, and I'm glad they ended the story when they did, before it really started to go downhill.
EDIT: I ended up doing pretty well on my Who Dies pool too. Obviously I missed who got the ricin, and I had cancer getting Walt and Jesse dying(I'm chalking Walt taking a bullet for Jesse up to my fan service comments). Other than that, the only two I missed were that I had the Plot-zis killing Brock, and Huell dying of high cholesterol.