Although I have some "whale of a story" stories, I'm tempted to limit my comments on this subject - most of my miracle stories are intensely personal. I can't help but comment on the topic, however, as I have strong views on the subject.
Many years ago I came across a little wooden plaque not much bigger than a name tag. What it said struck me so forcibly I glued it to the dashboard of my car so I could see it every day. On it was the word "coincidence," broken into syllables and with lexicographic markings as if it was a word in a dictionary. Underneath was the definition: "When God does a miracle but wants to remain anonymous." Good one, huh?