I'd call it the second best Nirvana album ever (i guess that not that hard when there was only 3 studio releases), second only to Nevermind. This was Nirvana's final hoorah and a helluva hoorah, at that. Bets track --The closer, All Apologies.
My favorites on this album are All Apologies, Heart Shaped Box and Rape Me. I found it so cathartic when I was younger to scream "RAPE ME!"... don't know why.