Blackbird? Wild Honey Pie? A Day In The Life?
I think he is basically implying that the Beatles just did odd songs. If a band is particularly experimental than one doesn't expect things that necessarily sound like their other songs.
A lot of off-kilter songs are actually absolutely brilliant. Take December Song by Sol Invictus, which is a foray into Jazz with fully female vocals, totally at odds with everything else in their catalogue. Or Current 93's 'christmas single', Crowleymass, which is probably pretty much one of the wierdest songs ever recorded anyway. It's like a novelty seasonal rap song from some sort of post-punk hell. It's also extremely at odds with the rest of Current 93's catalogue, which is strange, eerie, solemn, mystical and harrowing. And it has some of the best lines of all time
"And his name is Crowley it rhymes with holy
It isn't Crowley that rhymes with fouly! Ew!"
Incidentally, Helter Skelter is one of my top five favourite Beatles songs.