Dragon Fruit - Purple Haze is a large sweet fruit with relatively few seeds. The fruit weigh up to two pounds, and they have a pleasant gape, kiwi-like flavor. This variety is self pollinating, and like all of the other magenta fleshed fruit it will set fruit on its own. This variety does have commercial potential, and it can be eaten fresh, juiced, or used as a garnish.
Dragon fruit cacti - I actually managed to find this in a plant store (tons of babies in one small pot basically), and they're growing super well! Who knows, maybe we'll eventually get fruits from them :)