Great things about being blind. Disability adavantages?

I read a very interesting article yesterday.  It was about broadcasters hiring people who were deaf and lipread to tell them what Kate and William were saying at various times.  I laughed at first and then thought about it.  There are some deaf people who are using the skills they acquire because of their disability to make money.  So, I started thinking.  What other types of jobs could people with disabilities do using their disability as an advantage.  Comments most welcome.  I know that I'm a good conversation eavesdropper.  Does that make me a candidate for the secret service?  Don't think I'd like it.
come on and be creative.
Would love to hear people's ideas for various disabilities and careers.