Photo by Columbia PicturesComedians will use every tool at their disposable to land a joke, and that includes what's on top of their heads. Exhibit one: Jack Black and Michael Cera in this week's "Year One" sporting a hairdo that could be called the Caveman Shag. Click ahead to see some other notable styles of comedy hair.

Everett CollectionTHE MO' BETTER BOWL CUT

The Bowl Cut is the ideal hairstyle for the moron on the go. Those brow-level bangs keep the hair out of the eyes yet protect the head against hammer blows. Moe Howard originated the style back in the day, and it's still popular among those who are both dumb and dumber.

Everett CollectionTHE MAD SCIENTIST

You might make monsters from dead bodies or attach robotic arms to your back and rob banks, but you only really qualify as a mad scientist when you look like you jammed your tongue in a light socket. Young Einstein and Doc Brown show that it's not the brain, it's what you've got on top of it that counts.

Everett CollectionTHE OZONE DEPLETING UPDO

Do you really want to make an impression on dance-show contestants, Beverly Hills millionaires, or an angry mob wielding pitchforks and torches? Have you recently bought several industrial-sized cases of hairspray from your local Costco? Then why not go vertical? Just watch out for ceiling fans.

Everett CollectionTHE GARFUNKEL

Fur lined collars and polyester suits always look better for the on-the-town disco stud when topped off with a sexy Brillo pad 'do. While it's great for jocks who play basketball or hockey, it works even better on guys with sweet dance moves.

Everett CollectionTHE ETERNAL MULLET

Like some follicle based goddess of love, the Mullet may take many forms -- from the moussed late-80s Adam Curry look as exhibited by wedding singer Robbie Hart, to the long locks of a Mutton-Chop Tractor Pull as sported by Joe Dirt -- but it always has business in front and party in the back.

Everett CollectionTHE HAIR METAL HEAD

Head bangin' is always more satisfying when you feel those sweat soaked ringlets slapping the back of your neck. A headband is advisable when you're running from hitmen or reliving your glory days, but it's best to let it free when you want to party on.

Everett CollectionTHE CRASH HELMET

Whether you're a murderous alien sexpot on a mission to destroy the White House, or simply a oversized laundress stepping out of the house for the first time in years, the Crash Helmet is the perfect compliment to a sparkly top and pounds of latex make-up.

Everett CollectionTHE MALE FARRAH

This angelic feathered look that was so popular on posters in the 1970s isn't just for the ladies. It's also for undercover cops and champion figure-skaters, especially when they both have to deal with hotheaded partners.

Everett CollectionTHE BLONDE FABIAN

Sometimes you find yourself pursuing an animated siren who has crossed over into the real world. Other times you're wooing a time-traveling homecoming queen. Either way, you've got to look cool. And nothing says cool like a towering bleached pompadour.

Everett CollectionTHE PRODUCT MISPLACEMENT

There are many ways to achieve that oh-so-hip bedhead look. Armed robber and new father H. I. McDunnough gets it through good old-fashioned poor hygiene. Mary, on the other hand, achieves it... well, she achieves it using something else.