In addition to those already mentioned, my favorites would also include:
Keola Beamer's Moe`uhane Kika Kenny Emerson's Slack & Steel Kapono Beamer's Great Grandmother, Great Grandson Mark Nelson's The Water is Wide Uncle Harry Koizumi's Still Green
and Footprints in the Poi by George Kahumoku/Keoki Kahumoku/Bob Brozman is a treasure.
I second Keoki Kahumoku's selction of the Kahumoku brothers "Sweet and Sassy" album and Moses Kahumoku's album "Ho'okupu." Although I cycle through over 30 CDs, I play those two CDs almost every day while working in my shop.