Well, since you asked, there's:

- Mel's Hole: https://en.wikipedia.org/wiki/Mel%27s_Hole

- The Montauk Monster: https://en.wikipedia.org/wiki/Montauk_Monster

- Black Aggie: (From my beloved home state, no less!) https://en.wikipedia.org/wiki/Black_Aggie

- The Bell Witch: https://en.wikipedia.org/wiki/Bell_Witch

- Melonheads: https://en.wikipedia.org/wiki/Melon_heads

- The Fresno Nightcrawler: https://en.wikipedia.org/wiki/Fresno_nightcrawler...