I think "Someday" by Nickelback will emerge as one of my all-time favorite songs.

While I enjoy a variety of music genres from jazz to pop, I've always had a thing for melodic hard rock--stuff that pushes the envelope with rough sounds but is still a song you can hum. This is why I was really turned on to Bush (the band, not either president) in the mid 1990s; the band's hit "Everything Zen" demonstrated a great balance of in-your-face guitar sounds and infectious hooks.

Nickelback's "Someday" is just as effective and maybe even better. Scratchy vocals over a crisp acoustic guitar lead to an irresistible chorus and an simple but unbeatable bridge. Judging from other Nickelback songs I've heard, they're good at pegging this sound, but "Someday," somehow, stands out.