"With or Without You" in concert from ZOO TV to present. The passion is gone, even if on rare occasion Bono does bring some romanticism back to the song with the extra verse or rolling on the ground with a woman.
"Pride" in concert - all eras. This is the one song that U2 captured brilliantly in studio and has never, IMO, re-captured it live (and this includes the UF and JT tours).
"Beautiful Day" - at times I'd rather here the rocking "Elevation" than this crowd pleaser. I don't hate it by any means, but I was never this huge fan of the song.
"Staring at the Sun" - seemed out of place on "Pop" and the only versions I really like are the acoustic performances (in studio and in concert).
"Lemon" - at first I hated it, then accepted it, but now I skip over it as I find I like the Perfecto Remix of it far better.