Quite a few bands have hooks that sort of sound Emo, even though (virtually) no one would consider them to be emo.
A shout out/honorable mention goes to these:
Flickerstick. With Love we Will Survive and Coke would totally be considered emo if they were just sped up twice as fast.
Smells like Teen Spirit. You know of what I speak. Again, the two-note repeated hook before the verses, if done today, would probably be slightly more “major-sounding” and higher-pitched.
Keane, Someplace only We Know (?) One of the few instances of a genuine emo hook – in singing! Anyway, it gets the shoo-in because the melody of the chorus’s hook nearly makes me cry like the hooks of only a few songs do (and they are all emo or Pink Floyd), and I don’t even know the words!
But the winner is:
Such Great Heights, the Postal Service. You don’t know how many times I’ve started humming something by the Promise Ring or Modest Mouse only to have it turn into Such Great Heights!
Speaking of Keane (hey, I can do this, I’m the OP!) they are one of the few bands whom I’ve looked up in IMDB and the bands they list that are similar to them are spot on: Snow Patrol and Starsailor. Now, I could take or leave Starsailor and I’d go to see Snow Patrol if they were playing for free across the street from me, so now that I think that they are alike, I don’t have high hopes for the rest of Keane’s songs, even though that is the best new song I’ve heard in two years. Please tell me their other stuff’s good too!