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R2-D2, GOB Bluth & Other Fictional Folks Who Stopped by Sesame Street

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Hundreds of celebrities have appeared as themselves on Sesame Street, but plenty of popular fictional characters have made cameos as well. Here are some of our favorites, from R2-D2 to GOB Bluth (well, kind of).

1. C-3PO & R2-D2

Back in 1980, Big Bird saw a flying saucer touch down, but none of the adults believed him. Naturally, once their backs are turned, C-3PO and R2-D2 strolled on by. They'd come to Sesame Street to deliver a holographic message to Oscar from Lothar the Grouch. The important message: "Get Lost!" The droids stuck around for two episodes, playing games and singing songs. And then R2-D2 fell in love with a fire hydrant.

2. Superman & Batman

In the first season of Sesame Street, both Superman and Batman appeared in short cartoons produced by Filmation. In one clip, Batman told Bert and Ernie to stop arguing and take turns choosing what's on TV. In another, Superman battled a giant chimp. Batman and Robin took a break from chasing the Joker to talk about safely crossing the street safely, and Superman explained why S is his favorite letter.

3. Wayne Campbell

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In 1995, Telly and Big Bird hosted their own cable access show, Telly's Town, a parody of Saturday Night Live's "Wayne's World." While presenting music videos, they received several telegrams, which were delivered by Wayne Campbell himself. Before each one, Wayne became teary eyed at the beauty of the act of reading, and the episode culminates with Wayne, Telly, Slimey the worm, and a monster playing the Sesame Street theme song on tubas. No, really.

4. The Wicked Witch of the West

wicked-witchBack in 1976, Margaret Hamilton reprised her role as the Wicked Witch of the West. She was flying over Sesame Street when she lost her broom. The broom was found by David, who refused to hand it over for fear of what the witch might do with it. The Wicked Witch responded by making it rain inside Hooper's Store and threatening to turn Big Bird into a feather duster. After many frightened children, angry parents, and strongly-worded letters, the Children's Television Workshop decided not to re-air the episode.

5. Richie, The Fonz & the Cast of Bonanza

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In the second season of Sesame Street, the cast of Bonanza appeared in several inserts to teach kids how to count to 20, subtract horses and other important lessons. Not to be outdone, a few years later Richie Cunningham and Arthur Fonzarelli from Happy Days filled a similar role by filming inserts about the alphabet and dental hygiene. And I'm sure it was all worth it just to hear The Fonz say "A!"

6. Several Laugh-In Characters

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According to Director of Research Dr. Lewis Bernstein, Rowan and Martin's Laugh-In was a strong influence on the early days of Sesame Street. So it's no surprise that several Laugh-In characters dropped by Sesame, including Arte Johnson's German soldier, Lily Tomlin's Edith Anne and Ernestine the telephone operator, and Ruth Buzzi's purse-wielding Gladys Ormphby.

7. A Bunch of SCTV Characters, Too

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Continuing the tradition, some SCTV characters have appeared on Sesame Street, including John Candy's Yosh Shmenge, Martin Short's Ed Grimley, and Andrea Martin's Wanda Falbo (who appeared in several inserts as "The Word Fairy").

8. Luxo & Luxo, Jr.

luxoWhen Pixar was first getting its feet wet in the world of making-better-computer-animation-than-anyone, they trained animators by assigning them short films starring Luxo and Luxo, Jr., the living desk lamps seen in the intro of each Pixar movie. These short films, which taught lessons like light-and-heavy, up-and-down, and front-and-back, were featured on Sesame Street long before anyone had heard of Toy Story. So maybe this isn't as much of a case of Pixar characters appearing on Sesame Street as Sesame Street characters appearing in Pixar films.

9. Max the Magician (But Really GOB Bluth)

And we'll end with Will Arnett's Max the Magician, who appeared on Sesame Street in 2008 and was remarkably similar to the character he played on Arrested Development, GOB Bluth. Love his theme music.

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iStock // Ekaterina Minaeva
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Man Buys Two Metric Tons of LEGO Bricks; Sorts Them Via Machine Learning
May 21, 2017
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iStock // Ekaterina Minaeva

Jacques Mattheij made a small, but awesome, mistake. He went on eBay one evening and bid on a bunch of bulk LEGO brick auctions, then went to sleep. Upon waking, he discovered that he was the high bidder on many, and was now the proud owner of two tons of LEGO bricks. (This is about 4400 pounds.) He wrote, "[L]esson 1: if you win almost all bids you are bidding too high."

Mattheij had noticed that bulk, unsorted bricks sell for something like €10/kilogram, whereas sets are roughly €40/kg and rare parts go for up to €100/kg. Much of the value of the bricks is in their sorting. If he could reduce the entropy of these bins of unsorted bricks, he could make a tidy profit. While many people do this work by hand, the problem is enormous—just the kind of challenge for a computer. Mattheij writes:

There are 38000+ shapes and there are 100+ possible shades of color (you can roughly tell how old someone is by asking them what lego colors they remember from their youth).

In the following months, Mattheij built a proof-of-concept sorting system using, of course, LEGO. He broke the problem down into a series of sub-problems (including "feeding LEGO reliably from a hopper is surprisingly hard," one of those facts of nature that will stymie even the best system design). After tinkering with the prototype at length, he expanded the system to a surprisingly complex system of conveyer belts (powered by a home treadmill), various pieces of cabinetry, and "copious quantities of crazy glue."

Here's a video showing the current system running at low speed:

The key part of the system was running the bricks past a camera paired with a computer running a neural net-based image classifier. That allows the computer (when sufficiently trained on brick images) to recognize bricks and thus categorize them by color, shape, or other parameters. Remember that as bricks pass by, they can be in any orientation, can be dirty, can even be stuck to other pieces. So having a flexible software system is key to recognizing—in a fraction of a second—what a given brick is, in order to sort it out. When a match is found, a jet of compressed air pops the piece off the conveyer belt and into a waiting bin.

After much experimentation, Mattheij rewrote the software (several times in fact) to accomplish a variety of basic tasks. At its core, the system takes images from a webcam and feeds them to a neural network to do the classification. Of course, the neural net needs to be "trained" by showing it lots of images, and telling it what those images represent. Mattheij's breakthrough was allowing the machine to effectively train itself, with guidance: Running pieces through allows the system to take its own photos, make a guess, and build on that guess. As long as Mattheij corrects the incorrect guesses, he ends up with a decent (and self-reinforcing) corpus of training data. As the machine continues running, it can rack up more training, allowing it to recognize a broad variety of pieces on the fly.

Here's another video, focusing on how the pieces move on conveyer belts (running at slow speed so puny humans can follow). You can also see the air jets in action:

In an email interview, Mattheij told Mental Floss that the system currently sorts LEGO bricks into more than 50 categories. It can also be run in a color-sorting mode to bin the parts across 12 color groups. (Thus at present you'd likely do a two-pass sort on the bricks: once for shape, then a separate pass for color.) He continues to refine the system, with a focus on making its recognition abilities faster. At some point down the line, he plans to make the software portion open source. You're on your own as far as building conveyer belts, bins, and so forth.

Check out Mattheij's writeup in two parts for more information. It starts with an overview of the story, followed up with a deep dive on the software. He's also tweeting about the project (among other things). And if you look around a bit, you'll find bulk LEGO brick auctions online—it's definitely a thing!

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Opening Ceremony
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These $425 Jeans Can Turn Into Jorts
May 19, 2017
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Opening Ceremony

Modular clothing used to consist of something simple, like a reversible jacket. Today, it’s a $425 pair of detachable jeans.

Apparel retailer Opening Ceremony recently debuted a pair of “2 in 1 Y/Project” trousers that look fairly peculiar. The legs are held to the crotch by a pair of loops, creating a disjointed C-3PO effect. Undo the loops and you can now remove the legs entirely, leaving a pair of jean shorts in their wake. The result goes from this:

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Opening Ceremony

To this:

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Opening Ceremony

The company also offers a slightly different cut with button tabs in black for $460. If these aren’t audacious enough for you, the Y/Project line includes jumpsuits with removable legs and garter-equipped jeans.

[h/t Mashable]

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