Like seeing this. After reading the Checklist Manifesto I started a wiki at CCChecklist.org. The idea of that project was to be a Creative Commons licensed collection of checklists to share. This project is similar just using Github instead of a wiki. I never launched that project, but the concept is still really good. Minor nitpick that this is using Github Flavored Markdown for the checklists and I think Taskpaper would be a more useful and interoperable format.