I also recommend an alias like this (and l5870uoo9y has other examples and how to set them as git aliases)
alias gitlg="git log --graph --all --format=format:'%C(bold blue)%h%C(reset) - %C(bold cyan)%aD%C(reset) %C(bold green)(%ar)%C(reset)%C(bold yellow)%d%C(reset)%n'' %C(white)%s%C(reset) %C(bold white)— %an%C(reset)' --abbrev-commit"
From http://stackoverflow.com/questions/1057564/pretty-git-branch...