Especially back then, in the time of vinyls and cassettes (browsing music wasn't exactly as easy as pressing "play"), it shows the amazingly deep musical culture of these artists. The samples they use are from all over the place, and their songs are often built around a handful of seconds from obscure b-sides.
Daft Punk: Discovery https://www.youtube.com/watch?v=5AqHSvR9bqs
Daft Punk: One More Time https://www.youtube.com/watch?v=5QwOpRh-IfI
Mos Def: Mathematics https://www.youtube.com/watch?v=--A_89lTuiA
Pogo: Alice https://www.youtube.com/watch?v=au7RYxqaO10
Fatboy Slim: Rockafeller Skank https://www.youtube.com/watch?v=SBsRzyQ-TfM
And this 30 minute compilation that spans four decades is utterly mesmerizing https://www.youtube.com/watch?v=FpaoCUEhZJM