According to Wired, the secret to success in the field of programming is facial hair. Notable exceptions include women, of course, and Mark Zuckerberg. Of course, it may also be because those who are the best at what they do can get away with wearing their hair any way they like in the workplace. IT workers fall into different facial hair categories, some of which are shown here. There are twenty types of beards and/or mustaches illustrated in all, so if your profession is not represented here, you can see the rest at Wired. Link
(Image credit: Kelsey Dake)