Today I learned that you can view the raw commit data for any commit on GitHub by appending
.patch to the commit's url. For example, https://github.com/octocat/Spoon-Knife/commit/d0dd1f61b33d64e29d8bc1372a94ef6a2fee76a9.patch
This includes the author's email address. I know you can easily view the git log if you pull a repo down, but I didn't know it was easily visible on GitHub.