Perhaps I'm easily impressed and/or amused, but I had no idea until I went back into the world of corporate dronage that the Liquid Paper I grew up with had been replaced by cool correcting tape that's applied with a dispenser filled with all kinds of rollers and gears and semi-circuitous pathways.
Anything worth engineering is worth over-engineering, or at least providing the appearance of excessive complexity, and the good folks at Tombow apparently take this philosophy seriously. It's an elegant design for a mundane product, but after using it a while, I got this nagging feeling of - I don't know - familiarity...like I'd seen it somewhere before.
Now, I'm not accusing anyone of product plagiarism, but there really is nothing new under the sun.
For the less geeky readers, here's the reference.