Those Blasted Mistakes!

(These were initially posted on Romancenovel.tv in Summer 2007.  I’m reposting them here, as they are no longer available there.)
Okay, so what mistakes bother you most in a book? Typos? Anachronisms, verbal and/or physical? Gaps in the plot? Characters chiming in who are so NOT in the scene? Are any of these a wall-banger for [...]