Is there a way to copy a Card (project) in Trello including the checklist that it includes?
When you click on the card go to "More Actions..."
Then Click on Copy
You can change the card description, if desired, and click Add
There is a Chrome plugin that does that in the Chrome store. It needs a really simple patch which is at https://github.com/oo7ph/Trello-Clone/pull/7/files (see the Chrome store comments) to cater for recent updates to the Trello DOM.