I thought this was kind of inspiring. It (invented in Turkey) lets paraplegics move around from either a standing or sitting position. And getting into a standing position is apparently critical for the long-term health of paraplegics (circulation, etc.). Also, it lets people who have lost the use of their legs actually interact with other people at eye level. And they can get into and out of beds and bathrooms with less assistance.
The only thing I couldn't figure out is why it doesn't tip over. Not sure if it has gyroscopes at the bottom to stabilize it, like a Segway.