Git is awesome. If you haven't tried it yet, you should use it for your next non-critical project. Even if you're trapped using Subversion at work, the git-svn bridge will get you by and no one will be the wiser.
Just remember one very, very important thing: Git is not The End All.
I say this because I've noticed that some people, after migrating to Git (or Github), completely lose all discipline.
For these people, there is nothing but The Master Branch (dramatic thunderstrike!). There is no stable or unstable; there is only the master branch and its whimsical nature. Will the project work today? Will it work tomorrow? Did it even work yesterday? Who knows.
Here's a hint that you've gone horribly awry: if people need to track down the latest "stable" commit you made to the master branch by checking the timestamp on your announcement via Twitter about it, then you've royally fucked up and need to re-evaluate.
Rant over, as abruptly as it began.