Recently I've had reason to start several new projects with Git. That's nothing exciting (except for me), but it means I've been making a lot of first-commits, and often rebasing my early commit history before making it public. That, however, runs into an interesting problem: You can't easily rebase the first commit.
Sometimes that doesn't matter. Lately, though, I've repeatedly found myself wanting to change that first commit, often to remove a file that I included in the initial commit inadvertently.