So many BB references/allusions: Belize, the Kevin Costner line, the parking lot slow-walk filmed from behind the actor. I even got a little giddy seeing Jimmy in a musty basement in his skivvies (a la the penultimate BB ep when he's hiding in The Disappear's basement).
I thought this was a great wrap to an excellent season, as well as a great primer for next season. The Marco montage was flat-out fun, and his death creates a wonderful what-if for the Jimmy character. To wit: he gets arrested, gets bailed out by his stuffed-shirt brother, tries to make good of himself for a decade in a new place, gets dicked over by the same brother, goes on a bender (of sorts) with an old pal, but realizes he still wants to make good of his life. So what if Marco doesn't bite it in the alley? Does Jimmy play the straight-man permanently? Or does it just delay the inevitable? Either way, Gilligan and Gould have woven an intriguing tale that is connected enough to BB to be fun, but separate enough to not feel recycled.
And the fact that Mike just happened to be there for his epiphany is the icing on the cake.