Robert Bunsen (March 30, 1811 – August 16, 1899).

As observed by this recent Doodle at the Google website, March 30, 2011 marked 200 years since the birth of notable German chemist Robert Bunsen.  If the name sounds familiar, those of you who remember chemistry from high school or college might recall the Bunsen burner (pictured above).  Happy Birthday, Robert Bunsen!