I'm fine with movies. That's a 2 hour emotional investment that I don't even have to pursue if the spoiler was damning enough.
What gets me are things like the American Ninja Warrior one yesterday morning where I've watched something over the course of months and have developed "favorites" in the contestants and enjoy seeing some succeed and hope they do well. Plus since it's on TV I make use of the Tivo and catch up on it the next day. Same thing for other TV shows that have similar sort of reveals or twists that you have a long investment in. GoT is different since it originated from a book and most *major* plots are already well known to the readers.
Most of the time those things are contained in threads or vague enough to avoid the topic. But just vomiting results in a thread title is not cool.