If Google Trends had been around when John made his infamous comment about The Beatles being more popular than Jesus, we could have fact-checked his ass.
Because we can't look up 1966 in Google Trends, we'll have to take John's word for it. However, as this graph plainly points out, Jesus is, in fact, more popular than The Beatles today.
Its also good to see that both John and The Beatles are more popular than Yoko by a mile.
And a bonus for the pedants in the group, what John actually said was,
"Christianity will go. It will vanish and shrink. ... We're more popular than Jesus now; I don't know which will go first-rock 'n' roll or Christianity. Jesus was all right but his disciples were thick and ordinary. It's them twisting it that ruins it for me."
Which he later amended with a half-hearted apology by stating...
"I'm not saying that we're better or greater, or comparing us with Jesus Christ as a person or God as a thing or whatever it is. ... I wasn't saying whatever they're saying I was saying. I'm sorry I said it really. I never meant it to be a lousy anti-religious thing. I apologize if that will make you happy. I still don't know quite what I've done. I've tried to tell you what I did do but if you want me to apologize, if that will make you happy, then OK, I'm sorry."
Which seemed to be good enough for the Pope.