I actually was 7 when my father made me listen: Obla-di Obla-da (: in my opinion, what made them special and their songs was the way the composed every single one of them, to be totally & completely different as their first one, of course I think that every song, has it's message.
Octopus's Garden came on the radio when I was 7 or 8, that was when I first heard them but I only truly discovered them and when I say discovered I mean having my mind blown away listening to every thing they've ever written 24/7 straight for 2 years discovered.
Welcome Moogmodule! Sounds like we have something in common. I also have my older siblings to thank for my love of the Beatles. I have a lot of those little memories too, like peeking into my brother's bedroom while he and his buddy were listening to "Ticket to Ride". Glad you've joined us!
When I was 13 I saw them on a Jack Paar talk show--not the Tonight Show--late in December 1963. One look, one listen and I was intrigued.