Mine's probably While My Guitar Gently Weeps. The lyrics and music are deep and haunting; it's a pity the original doesn't have the added verse of his later solo version though(I like the original more in all other respects). George Harrison wrote two songs in my top five, and I do think he has the best voice out of all of them (Harrison > McCartney > Lennon > Starr).
Runner up is She Loves You. I know it's pretty poppy and shallow, and aside from the vocals having so much enthusiasm (She-said-she-LOVES-YOU! And you know that can't be baaaad....) and the third-person lyrics being a nice change I can't really explain why I like it so much.
Runner up is She Loves You. I know it's pretty poppy and shallow, and aside from the vocals having so much enthusiasm (She-said-she-LOVES-YOU! And you know that can't be baaaad....) and the third-person lyrics being a nice change I can't really explain why I like it so much.