I know this speech is a month or so before April 19th....but I heard this in a high school class this morning (while I was working on a PC), and if it doesn't raise your pulse a bit, then you ain't listenin'....
http://www.youtube.com/watch?v=G4DIKPJ9W-E (http://www.youtube.com/watch?v=G4DIKPJ9W-E)
I commended the teacher on her choice of subject matter, and she agreed with my observation that "they don't get much of this anymore".