'Normal modes for large molecules with arbitrary link constraints in the mobile block Hessian approach', by An Ghysels, Dimitri Van Neck, Bernard R. Brooks, Veronique Van Speybroeck and Michel Waroquier, published in The Journal of Chemical Physics 130, 084107 (2009), has been selected for the March 1, 2009 issue of Virtual Journal of Biological Physics Research. The Virtual Journal, which is published by the American Physical Society and the American Institute of Physics in cooperation with numerous other societies and publishers, is an edited compilation of links to articles from participating publishers, covering a focused area of frontier research.