Does Knuckle-Cracking Hurt Your Job Chances?

I found this article that talks about how you should work on your bad habits, knuckle cracking, and make sure that you don't it during the interview. The article goes on to talk about how you should also work in conroling your knuckle-cracking so that you don't do it in the office and annoy everyone else around you. (http://www.45things.com/2009/02/is-your-knuckle-cracking-killing-your.php)