I'm a huge fan of the "Sunscreen" speech which secured a UK no.1 hit for film director Baz Luhrmann in 1999. If I'd been asked to write a speech addressed to high school or college graduates, it would have probably ended up very similar.
Favourite lines include:
Do one thing every day that scares you.
[although I only do that about once a year!]
Don't feel guilty if you don't know what you want to do with your life. The most interesting people I know didn't know at 22 what they wanted to do with their lives. Some of the most interesting 40-year-olds I know still don't.
I didn't know anything about the history of this recording though. Only this week I found out that the thing has its own Wikipedia entry where the whole back story is explained. Fascinating stuff. I'll put that on my "I wish I'd written list", right next to Cien an~os de soledad and 99 Luftballons :)