I loved Scott's Unicade andthat is what I used. When I first looked at his site, I was afraid I would not be able to do it since he knotched out the 2x4 (dattos..?) to join them together. This was way out of my league since I did not have the tooling to make such cuts. This was the most scary part of duplicating Scott's design.
I went to Home Depot (hardware store) and found that they sell metal pieces (many different types and styles) which allow you to join 2x4s together easily. I think they are called "angle brackets". They should be in the roofing area since they are primarily used for joining roof trusses and 2x4s together. Anyway, this is what I did and it was a piece of cake. Once I got the skeleton together, I added the side panels and continued just like Scott's detailed pictures show. It turned out great and was not hard at all....just a lot of planning and replanning before cutting .... and overall time of course... Basically, I think Scott's design is most informative and quite well worth it, but I would admit seeing the knotched 2x4s almost scared me away from it before I realized these angle brackets could make that step idiot-proof.
PS: I do not have a website so I can not show you pictures of the final cabinet, but if anyone wants me to send them pictures of the cabinet I will. Just email me at emailAddrRemoved requesting them.