It seems counter intuitive, but hey, us geeks are counter intuitive anyways! (However, try explaining to your parents that you’re trying to fix it.)
After hurling a dead 4G iPod off a 3rd story balcony to test an iPod case, JC discovered that his iPod was suddenly working again – but only for an hour at a time or so. This odd turn of events prompted him to investigate by opening up his iPod, in which case he discovered that his click of death (not necessarily everyone’s) was a result of nothing more than an unseated hard drive cable. After putting everything back in its place, JC’s 4G iPod is back on top and jamming again.
According to the comments, this is similar to the “slap test” which may or may not revive a dead hard drive long enough to get the files off it.