'Since I left you' by the avalanches. The album is almost entirely made up of samples (between 1000 to 3500 separate samples by various accounts) and it works waaaay better than it has any right to. Sounds like it would be a gimmick but it has incredible cohesion, little to no 'low points' (songs I might skip with company) and easily 5 or 6 incredible songs.. Whole album flows together so we'll. Best description I've heard is "a dance party in heaven"

Some highlights are:

Since I left you

Electricity

ETOH

Frontier psychiatry

Radio