He supposedly cured Fraulein Paradis of her blindness and had a eureka moment when he convinced Franzl Oesterline to swallow a (*) lead solution.  
Mozart's first opera, Bastien und Bastienne, was premiered at an estate owned by this competent glass harmonica player.  This man heavily plagiarized from Isaac Newton's student Richard Mead in his doctoral dissertation.  He supposedly cured Fraulein Paradis of her blindness and had a eureka moment when he convinced Franzl Oesterline to swallow a (*) lead solution.  Antoine Lavosier and Ben Franklin were appointed to a panel established by Louis XVI that concluded this man was full of shit.  He held that the body was affected by tides and that diseases could be cured by eliminating the blockages within the blood through the process of animal magnetism.  This man would sit knee-to-knee with patients and move his hands around rhythmically to cure them.  For 10 points, name this man who lends his name to placing someone into a state of hypnosis.
Mozart's first opera, Bastien und Bastienne, was premiered at an estate owned by this competent glass harmonica player.  
Franz Anton Mesmer