We're delighted to welcome Mr Henry Winkler (aka The Fonz) to Mumsnet for a live webchat from his home in LA. Henry has transformed his own experiences of struggling through school with unidentified dyslexia into a great series of books for kids; 'Hank Ziper: The World's Greatest Underachiever'. As well as telling us about his books, Henry will be chatting about his own experiences with dsylexia, his recent tour of UK schools and of course dancing around the juke box at Arnold's Restaurant. If you can't join us on the day, post your advance questions here.