Finally

On Salon, someone skips the "Elvis is fat!" etc jokes and reminds us of his greatest moment, his '68 Comeback Special:

Paradoxically, the apex of the show comes in the unscripted “unplugged” segment, wherein Elvis jams informally with his pals, including old road buddies, guitarist Scotty Moore – integral to the early Sun recordings – and drummer DJ Fontana, both of whom he’d abandoned a decade earlier when he headed to Hollywood. They play blues, R & B, and rockabilly, and tell stories and make fun of each other between songs. This segment is raw, somewhat lo fi, even occasionally punky. Here more than anywhere else, Elvis often seems possessed, yet controlled just enough, tapped in to a fount of spirit and soul, invoking a carnal essence that hangs about the small studio space like an entity, drawing open multiple mouths and teasing lips into astonished, toothy grins. Elvis glistens with sweat, and thrashes at his guitar as if in a roadhouse. It’s one of the only instances where you get to see and hear him actually play, and he tears it up.

To me, that part's always been what I considered to be the show itself. Watch the whole awesomeness here, especially my superslice of supeslices, One Night With You (starts at the 45:30 mark.)