Here is an interesting story - a school in Scotland had a cloudburst - of worms. Yep, worms rained down from a cloudless sky. You can read about it here.
I have to admit - I've seen it rain frogs out in the desert. One minute you can be on a dry dirt road, and the next minute hundreds of tiny frogs everywhere after a cloudburst. I've never been able to get a logical explanation - any ideas?