Luke over on the Bad Deployment blog has posted up an excellent stone multibasing tutorial.
In planning my armies for Kings of War I’ve had to weigh the awesomeness that is multibasing versus the work of rebasing armies I already have assembled. Besides the work, one thing that also has to be weighed is that you really can’t use the miniatures involved in multibasing until the whole thing is finished. There are ways around it, but they end up requiring even more work.
You can check it out here.