I made some cinderblock garden beds last year, and this year planted tomatoes in one of them, which happened to be the one next to the fence. This was the result:
The damn things are taller than I am! Being new at this I got them into the ground rather late, so they're only putting forth ripe tomatoes now, but the plants have exploded with them.
The other day I picked almost two dozen ripe and almost-ripe tomatoes, and there are probably that many more still on the plants. Maggie's thinking of making sauce. Two things I learned from this year's crop: something to climb up is vital (they soon outstripped the cages I placed) and they ripen from underneath. That is, the ones underneath ripen before the surface ones, so have a way to check them and pick them underneath.
Credit should be given to the author of The Vegetable Gardener's Bible; Ed Smith's W.O.R.D. system (Wide beds, Organic methods, Raised beds, and Deep beds) sure worked for us.