I saw him live a couple of years ago. I went with a group of friends, one of whom is blind. The first 5 minutes of his show, he was off stage prompting jokes on the big screen, every one was laughing. He came out and said "Thats the first time i've tried that, i hope everyone enjoyed it", my friend raised his hand, Jimmy said "Do you need to be excused?", my friend replies "No, im blind, i just sat throught 5 minutes of people laughing and I have no idea why". Jimmy said "Thanks for that feedback, ill include a braille version next time".
Luckily my friend laughed.
Other than that, the show was brilliant.