All of them seem improbable. However, I think just both Dennis's and Laura's stories are improbable.

Richard Petty's story is about achievement and talent.
Lottory is not impossible. mathematically possible.
Fernando's story is about achievement and talent like Richard.
For Texas story people, it did not shocked me :) People always open to make mistake again and again.
Michael's story scared me. I always scared stories like that.
Church members were their luck day :)
There should be an explanation in physical science for sun and moon :)