harrypotter.wikia.com

WkopL TIL that Domhnall Gleeson, who played Bill Weasley in the Harry Potter movies, is the son of Brendan Gleeson, who played Mad-Eye Moody.
kOoVm TIL that a species of wasp, Ampulex dementor, is named after the Dementor. This name was chosen to reflect the fact that the wasp uses a toxin to neutralise the neural behaviour of cockroaches and make them docile, as if their souls had been sucked out.
0weXp TIL Tom Marvolo Riddle's name had to be translated into 68 languages, while still being an anagram for "I am Lord Voldemort", or something of equal meaning.