While I've only heard one song from Jet (Are you gonna be my girl), it sounds like a huge rip-off, first of Iggy Pop, and even more so of the B'z Negai (which I view as a somewhat homage to Iggy, considering it goes off in a different direction after the recognizable part) with the same chord progressions and everything (albeit faster).
[edit]Though I don't know how likely it is that they ever even heard them, come to think of it. I just found them to be quite similar.