Resume...cover letter...typos

I was reading an article about how spelling mistakes on the covering letter and resume can kill the chance of even getting an interview.  The common mistakes on the article are funny lol... You can tell they are most likely the byproducts of auto spell check.  Remember, DO NOT 100% rely on auto spell check. 

Common mistakes: "Dear Sir or Madman", "I'm attacking my resume for you to review", "Following is a grief overview of my skills" and this is my favorite..."Have a keen eye for derail."