So I got my stout kegged over the weekend. In the picture below I'm using the Co2 to flush the oxygen out of the keg before I fill it with the beer.
And here you can see the whole set up. I have room to expand for at least three more kegs, and I could fit a 3 gallon in there as well if I mount the co2 on the out side.
The second keg that you see there is a batch of old fashioned cream soda I made to play with the kegs and learn the system before I ruined a batch of beer on them. I think I have the carbonation all figgured out right and I'm glad I did this. Also, who doesn't like cream soda?