You probably know 33⅓ by now -- they do book-length essays about albums of interest.
It's a pretty broad-ranging series - Celine Dion's Let's Talk About Love has had a round, as have (arguably equally) asinine rock standards like Let It Be, Use Your Illusion, Wowee Zowee etc. That's deliberately antagonistic, but for good reason -- the series is arguably part of establishing what 'canonical' music albums are, for which it serves a useful purpose -- while also re-asserting the existing canon, it's done good work in expanding it, or recognising that the average listener has a wider idea of canon now.