The spookier the better, I'll start.
1991 VG, an object that completed an exceptionally near pass to the earth in 1991 and is a candidate for being an alien probe due to the fact that it's orbit is incredibly improbable, and the fact that by all accounts it should have impacted in 1991. Article on it here.
1991 VG, an object that completed an exceptionally near pass to the earth in 1991 and is a candidate for being an alien probe due to the fact that it's orbit is incredibly improbable, and the fact that by all accounts it should have impacted in 1991. Article on it here.