I have a new favorite flow in git. I call it feature-squash-rebase. It's used for taking a feature branch, and applying all it's changes in one commit onto the master HEAD.
It goes something like this. First, branch out for the new feature:
git checkout -b feature
Hack away. Commit frequently. Once you're done, return to master:
git checkout master
Now the magic begins. First, merge the feature branch onto master by using the squash flag, this will meld all the commits into one giant commit:
git merge --squash feature
Now you can review the huge diff, and commit when ready:
git commit -m "new feature"
And once you got that down, reapply your commit onto the master HEAD by using pull with the rebase flag:
git pull --rebase
That's it. Push your changes to the rest of the team.
This flow is not necessary, but it keeps the history super-clean. I don't use this for heavy features that I want to keep track of. But for short stuff, this flow is a keeper.