Away from the GUs, for whatever reason one which has always stuck in my mind was on Hernan Cattaneo’s ‘Funky Deep n Tribal’ mix for Ministry magazine:
Greppi’s World ‘Una Questione Informatica’ -> Creamer & K ‘I Wish You Were Here’ (16B Mix)
The way the former fades in to, then echoes out over the top of the latter just works wonders. The former track is at 19mins in the mix below, the transition out is a few mins after:
