The only song I listen to regularly which has noticeable autotune would be Fear Factory's 'Ascension'. And even then, the autotune is used for effect- it's MEANT to sound robotic and weird, and is used along with lots of reverb and delay to give the vocal part (kept in the background anyway) sounding far away and robotic.
Slightly more on topic, I'm very against autotuning- or at least autotuning, where it is obvious that the singer (*cough* Ke$ha *cough*) isn't even bothering to sing. If I can't notice it properly, I can live with it. Also, I think that some imperfections, such as one line in Nothing Else Matters by Metallica ('All these words I don't just say', I think) help to give the song more feeling somehow- just feels more human, you can tell nobody has messed with the sound.
Slightly more on topic, I'm very against autotuning- or at least autotuning, where it is obvious that the singer (*cough* Ke$ha *cough*) isn't even bothering to sing. If I can't notice it properly, I can live with it. Also, I think that some imperfections, such as one line in Nothing Else Matters by Metallica ('All these words I don't just say', I think) help to give the song more feeling somehow- just feels more human, you can tell nobody has messed with the sound.
