With hit shows like Family GuySouth Park, and more recently Rick and Morty, animated comedies for older audiences seem to be reaching new heights in popularity. Networks like Adult Swim and Comedy Central have helped bring adult-oriented animation to a level of success comparable to cartoons for kids and teens.

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Though there are many well-known examples, there do exist some shows that didn't garner much attention for one reason another. Perhaps they were short-lived, lacked a mainstream appeal, or were overshadowed by similar programs. But whatever the reasons, there's no shortage of examples when it comes to these funny, zany, and often edgy cartoons.

Dr. Katz, Professional Therapist

This cartoon flew quietly under the radar during its run from 1995 to 2002, being somewhat overshadowed by South Park. Despite emphasizing a laidback style, Jonathan Katz and Tom Snyder's adult animation offered plenty of cleverness and humor for those who looked.

Given the minimalistic, subdued style, the amusing dialogues are the focus here, and Dr. Katz delivers on this front.

What began as a way around a low budget animation led to the iconic "Squigglevision" which gave the appearance of squiggling and shaking character outlines, giving a unique stylistic flair. The show centers around therapist discussions with real celebrities ranging from comics Ray Romano and Wanda Sykes to actors Jeff Goldblum and Whoopi Goldberg.

Shorties Watchin' Shorties

Shifting to another comedian-centric romp, the short-lived Shorties Watchin' Shorties manages to greatly eclipse our previous entry in obscurity. It's a shame, because there were plenty of yuk-inducing moments to be had during its brief run in late 2004.

The schtick of this lude cartoon is its overlaying wacky animated visuals to preexisting stand-up bits from various comedians. As you'd imagine from the colorful rants and ramblings of Mitch Hedberg, Dane Cook, and Bill Burr -among others - there was no shortage of amusing clips in its 13 episodes.

It's perhaps a bit ironic that this show only narrowly missed the dawn of Youtube, as it's really tailor-made for it, given the bite-sized clips sampled from these routines.

Sealab 2021

In fairness, it's easy to see why a simple animation spoofing an even more obscure cartoon may not be the most prominent in the animation zeitgeist. Regardless, this underwater cartoon comedy by Adam Reed and Matt Thompson is one that Adult Swim fans should revisit.

Dating back to the early days of Adult Swim - and in fact, even predating it - there's a unique charm and historical significance to Sealab 2021. It's really helped pioneer the modern-day trend of goofy and occasionally lude satirical animation.

The show does a lot with a little - providing tons of laughs despite using recycled visuals with new wacky dialogue dubbed in.

Space Ghost: Coast To Coast

Space Ghost interviews Elvira from Space Ghost Coast to Coast

Like Sealab, this zany superhero spoof helped establish a formula on Adult Swim - and elsewhere - that's still largely used today, with its randomness and raunchy sense of humor.

Borrowing from yet another Hanna-Barbera property, this show features a former Saturday-morning hero interviewing famous guests, often throwing awkward, goofy questions and comments their way. George Lowe brings a simultaneously wacky and dry sense of humor to this unique character, who's backed up by a cast of equally colorful supervillains.

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The show's guest lineup has included everyone from Weird Al Yankovic and Jim Carrey to Hulk Hogan and Slash.

Clone High

Clone High Cartoon Network

What if some of the most prominent, influential figures in history happened to grow up together and attend the same high school?

This is the silly premise that Clone High apparently seeks to cover. Originating on the Canadian cable network Teletoon, this fun teen comedy got picked up by MTV in 2002, but only managed to last a handful of months before being canceled. The show centered around whimsical teen versions of Abe Lincoln, Joan of Arc, and Cleopatra, among others.

The initial tepid response, along with some heat garnered by the network's portrayal of Mahatma Gandhi, contributed to its run being cut short.

Code Monkeys

There exist many cases of retro video games sporting charming retro sprites, though this style has managed to be far rarer when it comes to animation. This makes it all the more puzzling that this unique G4 program never quite stood out, even during its brief stint from 2007 to 2008. Of course, it didn't help this arcade-themed comedy that the network had been shifting towards a non-gaming direction at the time.

The show revolves around a fictional game studio called GameaVision where its employees engage in shenanigans and goofy dialogues. Code Monkey's witty brand of lude, stoner humor is enhanced by its distinctly stylistic visuals.

Frisky Dingo

Killface looks on with a crowd of people behind him

With Frisky Dingo, the creators of Sealab 2021 manage to draw from the silly, satirical traits fans loved about that show while upping the ante - offering a more nuanced, original animation rife with crazy moments.

Those who enjoy comedic spins on action or superhero romps a la Archer or The Venture Bros. are also likely to get a kick out of this one, given its similarly edgy humor and action-based plots. The show centers around the amusing supervillain Killface and his billionaire counterpart, Xander Crews. It features a slew of epic moments and funny action film parodies crammed into its 25-episode run.

Harvey Birdman, Attorney At Law

Harvey defends Fred Flintstone in court

Those who have heard of Harvey Birdman in a retroactive sense may have a tendency to be turned off by the seemingly dry themes of courtrooms and the happenings of attorneys. And in any other scenario, these notions might be justified.

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But this show proves that anything can be funny and entertaining under the right circumstances, which in this case - includes a former superhero representing Hanna-Barbera clients in court. Harvey's eyepatch-wearing boss, voiced by the hilarious Stephen Colbert, injects tons of zany humor and adds even more life to this amusing adult animation.

The Boondocks

You don't often see a cartoon that manages to be so rich and profound while simultaneously providing so much laughter. Yet, Aaron McGruder's nuanced animation pulls this off to a great degree. Being derived from a comic strip and using satire to offer social commentary on race relations and classism, The Boondocks has no shortage of rich content.

The show certainly has its following, thanks in part to its likable cast, stylistic visuals, and its run of nearly a decade. Yet, its unique anime style limited its appeal to a degree. It had also been somewhat overshadowed by other prominent Adult Swim shows at the time like Aqua Teen Hunger Force and The Venture Bros.

This is an adult cartoon that's both smart and silly, and it's one that shouldn't be missed.

Celebrity Deathmatch

A scene showing a wretling match between celebrities in Celebrity Death Match

It's tough to find a better example of a more off-the-wall show than a stop-motion claymation featuring celebrity characters beating the daylights out of each other.

While Eric Fogel's Celebrity Deathmatch certainly had its time to shine in the ring, it seems to be somewhat lost to the pages of animation history for most, even after its '06-'07 revival.

The show taps into the thrills of wrestling and combines them with an edgy, goofy brand of comedy to round out a uniquely appealing romp. How can you not be enticed by matches between Charles Manson and Marilyn Manson, or a brawl between classic film legends Groucho Marx and John Wayne?

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