Justin Timberlake wants to write a book about golf! Sources say lit agent David Vigliano-who has recently repped books by celebrities like Shannon Doherty and Clay Aiken—sent editors a short proposal by the singer last month. Mr. Timberlake has been a golf fanatic for years, getting his first taste of the game as a boy and later playing it with a group of roadies during the last *NSYNC tour. Today, he regularly competes in charity tournaments, and even owns an environmentally friendly golf course in his hometown of Millington, Tennessee.