I swear I catch every freaking typo, every missed comma/period, every pronoun-antecedent error in every book I read, and it always jars me a bit. I almost wish I didn't notice them, but I'm hoping it means I'll be better able to avoid those mistakes in my own writing, or at least catch them in the edit.
Although, in the series I'm currently reading, I noticed two instances where the author swapped Character A's name for Character B. Both times, the same wrong name for the same character. Can't remember if they happened in the same book, but both really threw me for a full minute each while I stared at the book and tried to figure out if I was seeing things or that mistake was really in there.
I notice lots of other consistency errors, but I can't remember--
Oh! Another series I read mainly for guilty pleasure features a set of twins. In one of the books, the female twin is thinking about how she and her brother have always been able to do that twin sense-y thing that people think is so cool. In a different book, she specifically thought the exact opposite--that that stuff never happened between her and her twin.
I mean, between books, it's harder to catch that kind of consistency error, but dang! Contradiction much?
I love this thread.