> She started saying the characters' lines BEFORE THEY DID.

Most people don't realize that there are different types of talking during movies. They're kind of on a scale from "handleable" to OH-GOOD-GRIEF-I-NEVER-WANT-TO-SEE-A-MOVIE-WITH-YOU-EVER-AGAIN.

Type 1 is simple. Someone who is audibly surprised at surprising moments, comments like "whoa, that was scary", or voicing one's like or dislike of a particular venue or scene. All of this breaks immersion, but is passing, uncommon, and forgivable. Some people even prefer watching with others this way -- if they're not at least Type 1, they argue, why watch it together?

Type 2 are those who want to talk, but within the context of the movie. Talking during slow moments in the film about theories on who the culprit is, for example. Similarly breaks immersion, but has a longer offending period. I actually don't mind this type as much -- sometimes I'm willing to pause the movie and discuss.

Type 3 are essentially hecklers. People who point out to the characters that they're being stupid, who say "no, don't go in", who give punchlines for statements that weren't jokes, and so on. Mystery Science Theatre 3000 supplied a couple of these guys for you, proving that they CAN be pretty fun to be around. But MST3K isn't for everyone, and I didn't watch much of it myself.

Type 4 talk about how their day went, DURING THE MIDDLE OF THE FREAKING MOVIE. Highly annoying, and generally they just won't shut up, talking about whatever comes into their heads next. The only saving grace is that they usually don't expect any kind of response, and it's not actually about the movie, so you can kind of tune them out and watch the movie anyway, if you're skilled at such things.

But you, my friend, have a raging T5. If I were you, I'd release my canister of winged sensors and get the heck out before I got hit by a flying cow.

Incidentally, cult films seem to attract T5s like nothing else. I made the mistake of seeing "The Princess Bride" at a theatre once. I'm quite familiar with the movie, being quite a fan, but having the entire audience reciting the lines just before they play is annoying in the extreme. I want to hear the ACTORS say the lines, not some pimply jerk who happens to be sitting next to me and wouldn't know majesty if it bit him in the face.