Gallows Pole, DB. But there are many. Immigrant Song is right there. Too many to choose. Good Times Bad Times. Well, I'll have to stop. But I have to say though I like the guitar in Stairway to Heaven enough to play "at it" every time I pick up a guitar, I think it was a lyrical attempt at selling the devil to God and in doing so, to meet the mainstream. So it will never be close to a favorite of mine.