At work we had a dead HD brought back last year. We have nightly full backups, but rescuing the few hours of daytime work before it died was nice.
It's on maintenance contract -- the techie had an idea -- took it back to his office, swapped the electronics with another drive of the same model, stored the data to another device and brought it back, saying that our old drive had good platters but bad electronics, and that his jerry-rigged improvisation died again soon after his backup.
Let's just say I'm satisfied with their service. And dead isn't always dead.