Bought this indoor at the home depot garden shop. There is no ID present. It is growing in traditional potting soil that is quite moist. The plant seems to be enjoying it, but I have no idea what is is or how to care for it... It looks just like green spaghetti with an al'dente texture.
I can't make the picture any bigger, but here is a closer one... The stems are literally the same diameter as spaghetti and about every three or four inches each stem splits into exatly 2 stems- looks like an upside down Y, then each of those branches splits 3 or 4 inches later into another inverted Y.
Looks like a Rhipsalis, perhaps R. capilliformis: http://images.google.com/images?svnum=10&hl=en&lr=&c2coff=1&client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial_s&q=Rhipsalis+capilliformis&btnG=Search or R. cassutha.
I agree. Looks like one of the many subspecies of Rhipsalis baccifera, Mistletoe Cactus. Here is an interesting site on Rhipsalis.