Although I find some McCartney songs cringeworthy there is little doubting the genius that is 'Yesterday'.
GorillaGal - I also believe George Harrison's contributions were underrated - 'Something' is another classic.
Lennon's 'Help' has to be one of the most honest songs ever written........
I also like the acid-induced songs (not sure why!) including 'I am the Walrus', 'Come Together', and 'Lucy in the Sky with Diamonds'.
But surely the total brilliance of the Beatles is encapsulated in 'A day in the life'?