Liquid Swords is okay, I guess. Enter the Wu-Tang is my favorites "real" rap album but I don't like hip-hop. (Fave rap album overall is As Nasty As They Wanna Be -- ever heard that one?)
Every track on Mothership Connection is great. I own it on vinyl; I really ought to give it a spin again. I want the bomb.
I'vr never heard Music From Big Pink but the guy two rooms over used to blast "The Weight" -- never a good song even without such bombardment -- over and over really loud until he was expelled for plagiarism second semester. I really hate that song.