Okay, my third and final thread in here for the day. I'm feeling adventurous. 
What's the worst spoiler (intentional or not) that you've ever come across, and wish you hadn't? Did it ruin the episode/book/movie for you?
For me, some I wish I could get back:
Totally ruined the movie for me. I didn't enjoy it for a second. I saw that exact phrase on a T-shirt, and remembered it.
I read it on a website. I wish I had been more patient, because that was a big WTF moment.

What's the worst spoiler (intentional or not) that you've ever come across, and wish you hadn't? Did it ruin the episode/book/movie for you?
For me, some I wish I could get back:
Verbal is Keyser Soze
The reveal that is was a flash forward