Conan O'Brien's hiatus between 'The Tonight Show' and Nov. 8th's premiere of 'Conan' has left a distinctly large, tall void in television. Sure, we miss O'Brien's smart, absurdist wit. However, we are referring to programming's complete absence of red hair styled into a ridiculously high wave with a flip at the end.

The late-night host's haircut is a punchline by itself. O'Brien often flips and shakes it to tag monologue jokes. He jokingly apologized for it at the end of his infamous written statement about his future on 'The Tonight Show:' "Have a great day and, for the record, I am truly sorry about my hair; it's always been that way." (We're not sorry for it! Conan made our top TV redheads list.)

The great red hairdo has been missed. It is one of the few truly distinct cuts on television. How many actors, hosts or reality stars pop into your head when you think hair? A few for sure, but nowhere near the number 20 years ago – back in the '80s when crazy hairstyles defined a person.

As we welcome Conan back into our late night TV schedules, we also welcome him back into TV's club of distinct on-air hair.

Donald Trump, 'The Apprentice'
The millionaire's insanely awful golden comb-over had to be one of the most-widely known hairdos in all of pop culture People can't believe someone with so much money would intentionally look like that and speculate on whether it's even real. While Conan uses it for comedy, Trump is tired of the attention it gets. A few months ago, he insisted an add 'Celebrity Apprentice' be pulled because it mocked his head.

Marge Simpson, 'The Simpsons'
Yes, she's a cartoon and in that world, many characters have cartoonishly large features. Still her three-foot tall, blue beehive sticks out more than any other. It doesn't even seem to make sense. What era is she living in? That is precisely why viewers around the world recognize it and why the show's writers are able to use it often for quick visual jokes.

Snooki, 'Jersey Shore'
Not since Rachel's 'do on 'Friends' has a (somewhat) desirable style become so quickly tied to one particular celebrity. The Snooki Pouf became the topic of more blog posts than her outlandish drinking and behavior. She's shied away from the crazy cranium top lately since so many people were teasing her. However, she'll still rock the Pouf at proper parties.

Noah "Puck" Puckerman, 'Glee'
Mark Salling has admitted he doesn't like his character's Mohawk. It's not really badass like Mr. T's and it's not quite as silly as fauxhawks. "It was cool for a while, but I'm kind of over it. I feel better when I don't have it," he toldan interviewer. Well, it's a small price to pay for being on TV's biggest teen hit. Oh wait, he hasn't been around much this season. Is it because he spoke out against the hair? Producers say he's coming back, so we'll have to wait and see.

Anderson Cooper, 'Anderson Cooper 360°'
Graying, white hair hasn't been cool since Steve Martin first pulled it off back in the '70s. And even then it wasn't sexy, unless you were a drunken college girl or comedy nerd. Defying the odds, news anchor Anderson Cooper manages to mix his old-man hair with a young-boy's barbershop style and still be a sex symbol. Just like Conan uses his huge, red hair for laughs, Cooper uses his to seem extra smart and a little tough. It's close to an army cut, close to a university professor's color – and yet, not at all either.