Don’t have the money to get yourself a Gigapan system, and don’t want to spend the time stitching together pictures from your regular point-and-shoot? Japan has a solution for you. The great thing is, it’s so simple I don’t have to explain it. Actually, that trigger bit looks kind of complicated, but I’m sure you’ll figure something out.
But seriously, if you want to do panoramic photos, get Hugin. The solution pictured is ingenious, though.