I'd have to say Jorma's solo in Wooden Ships - first time I hear it it brought me to tears, and it still blows me away, no matter how many times I hear it.
It's kinda off topic, but I just figured I'd take the time to bring it up for anyone who digs the Great Society - Darby's solo in "Didn't Think So" (Second track on collector's item) is ACHINGLY gorgeous in it's almost folky miminamlism. Nobody ever seems to notice it, and I still haven't figured out why.
"War's good business, so give your sons
But I'd rather have my country die for me" ~ Grace Slick, Rejoyce 1967