Click the image below to view a video tutorial on how to headshot the witch in Left 4 Dead (L4D). Doing this correctly, will help you in versus matches when the witch is in a vulnerable spot for your team, also you will be able to receive the "Crown the witch" achievement. From what I have seen on youtube, Eminem may appreciate this video.
Thanks for the tip!
Gotta say that was an intense little video i felt the horror of it all. Two thumbs up!!