Yes, Hey Bulldog is a Beatles song. on the yellow submarine album (not so sure about the yellow submarine soundtrack though...) you might not rember it so well since I think that was the song was taken out of the original US or UK release, cant rember which one...( I think it was the UK edition)
if any song would represent me (personality wise), id have to say "while my guitar gently weeps". its always a song I mention and in some ways, live with. and no I haven't been "brought and sold" and don't wish to be either.
there are 3 different versions, The original white album version, the anthology 3 version and the love version ( ok well the love version just has a string part added to the anthology 3 version but its still different.)
the original is more of a rock, blues style while the anthology is a much sadder, acoustic version where I find more raw emotion. I find myself to relate both to these styles.
ive also had said in the Paul lyrics appreciation thread that I find myself relating to fool on the hill, which I do but to be completely honest, I just always look back to this song to explain myself.
for physical appearance id say " Im So Tired"