I think the two most popular available minifridges are the Danby and the Frigidaire.
My kegerator is the Frigidaire 4.4: http://www.homebrewtalk.com/f51/frig...version-89013/
Here's a pic using my terrible cameraphone:
It has changed the model number over the years. From FRC445GB to LFPH44M4LM to whatever. It's at Lowe's and it's 4.4 cubic feet. $179 normally, but you can get a 10% off coupon from the post office (mover's packet).
The only mods you need to do to fit two ball lock cornies are unscrew the freezer shelf (it's literally just a shelf...no lines), unscrew the thermostat housing and push it further back. That's it to fit 2 and a 5lb co2 tank on the shelf. For dispensing, people go through the door or put a tower on top. I put a tower on mine, but you have to be very careful as there are coolant lines in the top. That thread should have lots of pictures to show you what to do.
It is a pretty tight fit...if you coil the beer lines, you shouldn't have a problem.