I can be forgiving about a lot of faux pas in writing. I don’t mind some cliché’s if they’re presented with a new and interesting twist. I can even forgive the occasional character stereotype if they work well within a story, and most of the other characters in that same story are more complex or original. I can even forgive the archetypical hero’s journey formula that appears in most popular fiction and fantasy. But, one writing sin I just can’t STAND and instantly kills a story for me is bad dialog!