He spent much of his appearance promoting some device that he had medically inserted that has a remote control and sends electrical shocks to the nervous system to disrupt the pain signals (it can be throttled to counteract higher levels of pain). He was so impressed by this device that he wanted to work as a spokesman for the company just to help others end their pain.
Some may see it as a snake oil salesman trick but I don't think that he's a paid spokesman and he seemed very obsessed by the benefits of this device.