We've made converts out of our friends, Dave and Fred. We helped them install two raised beds and planted some of our heirloom tomatoes. We are using 2L soda bottle as mini greenhouses for the very small plants and also to protect them from critters. Dave and Fred live on the edge of a subdivision where they get rabbits, the occasional deer and other critters. They will also install chicken wire to help with denying the critters.
This brings up an interesting note. I have been thinking about starting a side business for designing and installing raised bed gardens. Small scale for urban dwellers. I've read several books about small business practices. I'm not sure I have the time or energy and we certainly don't need the money. But I toy with the idea nonetheless.