Don't worry; I'm not going to give away the title.
I know the parodies are flying fast and loose, but if you're looking for an ongoing thread that may ultimately have you weeping with laughter, Metafilter is all over it.
A warning for those who never tread in Metafilter's waters -- there is never a thread without *some* people trying to ruin the fun or looking down on the topic or whatever, but you can easily ignore them. Also there are those who fight back with "Harold Bloom can suck it" and so forth. And, of course, Metafilter in-jokes. But really, 95% of the thread is parody titles.
Some faves:
Harry Potter and the It Was All A Dream
Harry Potter and the Not Getting Around To Finishing Gravity's Rainbow
Harry Potter and the Noun Phrase
Harry Potter and the Title That Totally Won't Make Sense Until You're On Page 458
Harry Potter 7: Harry Potterer
Good times.