HOw's this one for starts? Talk about an awkward guitar key. It's in F# (Gb)...and...they didn't use capoes Boys n' Girls, nor did they look at the necks of their guitars. Try doing that on live TV in front of the largest Television audience in history up to that point (still holds records, from what I understand).
Beatles Forevuh...
http://www.youtube.com/w/The-Beatles?v=McXRb5k9c9k&search=the%20Beatles
Love ya' Johnnie Andrea...I must do my John imitation for ya' sometime. Maybe over the phone. I can do a pretty good George also. Not Paul or Ringo though...