This one is not mine, but with all the questions that get asked about multiple monitors, I though it would be worth passing along Andy Naselli's blog post that shows his desk and treadmill setup. If you look closely at the monitors, you might see a relatively well known piece of Bible software running.
http://andynaselli.com/how-i-set-up-my-desks-one-for-sitting-one-for-walking
http://andynaselli.com/wp-content/uploads/desk2.jpg
Very nice.