To satisfy all this pent-up demand from generations of NLP students, here is a 4-minute song about parsing. If you follow this link, I trust you to do so on a machine with highly flattering speakers or earphones, of course. Also, please edit the audio file first to improve my voice.
http://cs.jhu.edu/~jason/fun/grammar-and-the-sentence
The ostensible occasion is Valentine's Day -- a day when your faithful NLP tools just want a little love. Have you parsed your corpus today? The parser would appreciate it even if the corpus isn't so sure.
-whimsically, jason