I was pretty impressed with my 5 gallon bucket potatoes. They never got to the point of flowering, but I still got I would say an 8 to 1 ratio. I planted red potatoes, next year I think I'll expand to 8 buckets, and maybe even cut the bottoms out of some buckets and stack them so I get a bigger yield.
Tomatoes did extremely well. Well over 100lbs of tomatoes over what i sat in the garden and ate (I can eat me some tomatoes!). I got some (8) - 15 gallon tree planters from the garden center for 3 dollars each, and planted my extra seedling tomatoes in them so that extended the tomato harvest a bit. Zukes were awesome but could have been better if it weren't for a white powdery coating on the leaves that seemed to kill the plants off. Same thing with the cukes.
I need to plan out the tomatoes better next year, they got welll over 8 feet tall and fell over the trellis and over all the other plants. I am adding a third 4 x 8 raised bed this fall, so I can get some garlic into the ground before the ground gets too frozen. I also am going to fashion a hoop system to cover the newly planted seedlings in the spring. I also am going to do more vertical gardening, I have some trellis ideas for green beans and squash, so they take up less room. I also will have space for 3 more fruit trees. another pear (cross pollination with the existing one). The wife wants a peach tree, but I am not sure how that will work. Also going to need to prune the heck out of the fruit trees in the spring.