Bottom Buddy [4].
The Bottom Buddy consists of a curved plastic handle with a golf-ball sized head at one end. The head features flexible plastic pieces that resemble the closed bud of a flower. Pry the petals apart, insert a wad of toilet paper or a moist wipe, and it's as if your arm has just grown a foot longer. Reach back (from in front or behind), wipe, and then press the release button on the handle to drop the soiled paper into the toilet.
I've been using the Bottom Buddy for about six months, and it's comfortable, clean, and does what it's supposed to do. Because it's low-tech, it's also simple -- no plumbing, no batteries, no fuss or muss. I keep it in a drawer in the bathroom and it's always handy.
I believe it's made in Korea, and can be found through a number of web-based providers of home health supplies. The price is just under $40, although it may vary by a buck or two, depending on whom you buy it from. That's not exactly cheap, but the thing is well made and won't fall apart after a couple of weeks.
I have no interest in the manufacturer or sellers of this device -- I'm just a satisfied user and thought there might be others here who could benefit. And, no, I don't know if the manufacturer is aware of the alternate meaning of the product's name.
-- Jimmy TenEyes [5]
Editor's note: For comparison, I tracked down a few other types of assisted wiping devices. Jimmy TenEyes wasn't kidding!