Are there any famous people known to have Kallmann's syndrome ?

Jimmy Scott is an American Jazz vocalist. His unique high pitched singing voice has be attributed to the fact his voice did not break fully due to the fact he has Kallmann's syndrome.

http://en.wikipedia.org/wiki/Jimmy_Scott

Brian Brett is a Canadian poet and novelist. His book "Uproar's your only music" tells of his childhood and upbringing and living with Kallmann's syndrome.

http://en.wikipedia.org/wiki/Brian_Brett