In a way it's an impossible task to narrow it down to only five albums... Ten I could've done, perhaps... If there could be Top 10 for every genre in existence... Or else it's meaningless- Too much good music to choose from!
But, anyway, some of theses albums/artists would definitely make it to my list:
Tom Waits- "Swordfishtrombones", "Rain Dogs"
Brian Eno- "Here Come The Warm Jets", "Taking Tiger Mountain (By Strategy)"
Comus- "First Utterance"
KLF- "Chill Out", or "White Room"
Global Communication- "76:14"
The Black Dog- "Spanners", "Bytes"
Kate Bush- "The Kick Inside", "The Dreaming"
Can- "Future Days", "Tago Mago"
Nusrat Fateh Ali Khan- "Night Song"
Antonio Carlos Jobim/Stan Getz- "Getz/Gilberto"
...Bubbling Under:
Aretha Franklin- anything (don't think coherent albums was her forte, it's more the singles)
Joni Mitchell- "Blue"
lots and lots of psychedelic rock, krautrock, folkrock and blues
lots of experimental audio "artists"
some classical
a little less "world" music
a dash of soul and funk
etc.