Originally Posted by pdurrant
I nominate "1632" by Eric Flint. It's available in the Baen Free Library.
It's alternate history SF, with the change point being the arrival of a section of North America from 2000 AD in the middle of Europe in 1631.
I subscribe this recommendation. I've been curious about this book, I think it's time I give it a try.
My instinct says it has plenty of food for critique.