It seems that everyone and their dog has their own way to represent the current Git branch in the command prompt. Here's mine. Stick it in your ~/.profile.

export PS1='\[\033[01;32m\]\u@\h\[\033[00m\] \[\033[01;34m\]\w\[\033[00m\]$(git branch &>/dev/null; if [ $? -eq 0 ]; then echo "\[\033[01;33m\]($(git branch | grep ^*|sed s/\*\ //))\[\033[00m\]"; fi)$ '
craig@shiny ~/sandbox/addressbook(master)$

Now with 50% cleaner code

Not long after I posted this snippet I found a post about enabling git auto-completion. If you use the auto-complete file that's bundled with Git you can use the following code to get the same prompt (and get some nifty tab-based goodies too).

export PS1='\[\033[01;32m\]\u@\h\[\033[00m\] \[\033[01;34m\]\w\[\033[00m\]$(__git_ps1 "\[\033[01;33m\](%s)\[\033[00m\]")$ '
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