This morning, I saw the coolest plant, Arisaema sikokianum! It is a Japanese/Chinese (depending on what you read) Jack-in-the-Pulpit. The pitcher is practically black on the outside, while the interior spadix is pure white. It is just striking. I am about to go back and buy one (all I can afford) now that I have done some research and ascertained they will survive in zone 5.
This site gives you some idea of how beautiful this plant is: