...or, to actually answer the question:
The story of the Wandering Jew has it that, as Jesus (Mr Christ to thee and me) was hanging on the cross, in quite unimaginable pain, he was being mocked by a large crowd of people.
Being rather miffed at the time, the chap nailed to the bits of wood cursed one of his mockers to wander the earth forecer until his (Christ's) return, at which point he could beg for forgiveness.
The mocker was thus cursed with semi-eternal life, and wanders the world awaiting the return of Christ, or, according to some legends, until he can find the Holy Grail, which might also cure his immortality.
The Wild Hunt, in the version which I am most familiar with, is Odin (or Wotan, or the Devil, or whatever) tearing across teh sky in his chariot with a pack of huge, ferocious, snarling hounds (or devils, or damned souls, depending), intent on tearing the life/soul/fashionable footwear from any man, woman etc unlucky enough to lay eyes on it.
It's traditional to cower indoors in terror when the Wild Hunt approaches. It's a myth most common to North Europe, and, it has been suggested, is possibly inspired by (believe it or not) the demonic honkings of migrating geese. Which could be quite terrifying if it was dark, I suppose.
Jon