He may be fated to look boyish when he's collecting social security, but Steven M. Cohen, proprietor of the blog Library Stuff, is as grownup and dedicated a librarian as one will ever meet. His first library job was as a reference librarian and Internet trainer in a public library. He loved its "overall feeling of democracy in action" but seized the opportunity for tile entirely different demands of working in a law firm where virtually all information needs include, "Can you get this to me by noon?" The real story of Cohen, though, is how he came to be the guru of keeping current with the professional literature. To help others keep abreast, he started the blog Library Stuff in August 2000. Cohen believes that librarians have an obligation to be ahead of the curve, to know more than their patrons do about new technologies, and to understand how their use could improve library services. This article describes the many accomplishments of Steven M. Cohen and chronicles his career as a library employee.