most Americans refer to op 31 #2 as "The Tempest," although "Storm" is an accurate translation of Beethoven's famous remark about that sonata (referring to Shakespeare's "The Tempest").
May I just express my joy that there are still in 2010, people who are only now discovering such famous and, even to some, overplayed masterpieces of the past for the first time! Something to remember...that even though we may be mindful of the history and the performance practices and that audiences are mindful of the same things, any performance of the Appassionata or works like it may be (likely will be) the first time someone in those audiences has heard it. Isn't it inspirational? Doesn't it breath new life into the process? And it magnifies the responsibility at the same time. Ah well, I just think that's cool. I am now remembering the first time I heard the slow movement of op. 2 no. 3! Wow, you can go back and be that for somebody.