Anyone else happy with Assembla? 2GB, unlimited repos and users, source browser, etc.: http://offers.assembla.com/free-git-hosting/
Admittedly some of their tools have small problems, but the team is responsive and improves it steadily.
I've used one of their paid programs for everything we do (must be about two years by now) and I would recommend it.
Assembla doesn't seem to have that social aspect like Github, but I find their combination of tickets, wiki, forum and repos more useful.