Eric Lander has joined the faculty of Harvard Medical School's fledgling Systems Biology Department. Landing Lander is a major boost for the department. As of last January, it had just four faculty members, none of whom "represented the center of systems biology," according to its founder, Marc Kirchner. With Lander on board, recruiting top talent for the 20 or so full-time positions still open should become easier. Lander is the quintessential "quantitative" biologist, having trained in mathematics and using that training during the international effort to sequence the human genome. Lander remains the director of the Broad Institute and a professor at MIT.