Ending a beloved series the wrong way can bring a lot of backlash (just ask "How I Met Your Mother"), so when creator Vince Gilligan had to send "Breaking Bad" into the sunset he made sure there was more than one possible outcome. In an interview with EW, Vince Gilligan revealed that there was "30 or 40 different permutations of the ending" for the series finale, "Felina." Mostly because they boxed themselves into a corner introducing Walt's M60 in the first episode.