IMO, every piece of rock and roll made after 1964 must be measured against the Beatles. I would guess that you could pick any random person off the street and they'll probably know the lyrics to at least one Beatles song.
I remember two albums my mom had in the house when I was growing up. One was Bookends
by Simon and Garfunkle. The other is still a perennial on my Desert island Disks list: Abbey Road
by The Beatles. The second side of that LP is one the best album sides ever. From Here Comes the Sun
(Goerge Harrison at his best) to Her Majesty
it is near perfect music, IMO.