In addition to rendering me totally independent in the bathroom most days -- and who really likes having someone else wiping their ass? -- it has this setting that warms the seat up when you sit down. I thought it would feel gross, like when you know someone's just used your toilet because it's warm. But it goes much hotter than that. And in a Vermont winter, you never want to leave the bathroom!
FWIW, I have the BB-1000 and I'm completely and totally happy with it. I love how it tries to be all euphemistic by calling what used to be called "Enema" (I had to order a new remote control or it'd still be called that) "Vortex" (and on some models "Turbo")... and then completely ruins the attempt to be discreet, by having the visual icon be a butt-shaped thing with water spraying into it.
Also the instruction sheet is taped up near the toilet, and again it's the enema section that gets ridiculous. It shows a diagram of someone sitting on the toilet, sideways, cut in half so you can see the water spurting into their colon... and then shows a graphic display of how to push the poop out of your butt. With illustrations!
Whoever my roommate is, they're going to have to put up with a lot of grossness.