Every so often, I like to run my manuscripts by an innocent bystander to see if I can glean any new perspective. Often times, I already know of screaming problems that need to be addressed or issues that I've yet to tackle, but I ask instead for that person to simply point out specific needs, such as not enough detail, too much detail, not enough action, dialogue etc...
So, when I get back my manuscript with some red notes and suggestions, I'm thrilled when I see what I was looking for. Unfortunately sometimes people go above and beyond and do a little extra critique. In the end, I'm glad to hear suggestions, because ultimately, whether I act on them now or later, or even never, it's a fresh pair of eyes and a new perspective.
Does it bug you when people take it upon themselves to try to be your personal editor and literally shred your work right before your eyes, when all you may have asked for was a perspective of "dialogue smoothness?"
How do you handle critiques?