Character shows off a skill that doesn't seem like anything special to the layman but is unbelievably impressive to those who know the craft.

[u/SpookieSkelly]

1. Giotto of Florence from real life. The pope wanted to commission a painter and sent a messenger to collect works from a bunch of artists so that he may examine their skill. When the messenger got to Giotto, Giotto simply freehand drew a perfect circle on a sheet of paper in front of the messenger. The messenger was confused, but Giotto told him that it'll make sense once he tells the pope how he drew the circle. Sure enough, the pope recognised the skill it takes to draw a perfect circle freehand without a compass and gave Giotto the commission.
2. Johnny from The Devil Came Down to Georgia. While the Devil's solo sounds cooler on the surface, Johnny's solo is actually more difficult to play and showcases more advanced technical skill.

[u/Educational_Ad_8916]

I once was at a conference where a bunch of professional magicians were hanging around chatting, and a young man approached to show them a trick. He held out a deck of cards, shuffled it one handed, drew a card, and put it back in the deck without using his other hand. Then he did it over and over.

The lay people, like me, were unimpressed.

The magicians LOST THEIR MINDS. Appearantly he had invented a novel technique.

[u/Due_Campaign1432 → u/Educational_Ad_8916]

I mean shuffling one handed is fairly impressive by itself

[u/blitzbom → u/Due_Campaign1432]

Just cutting a deck with one hand is difficult. Easier if you have long fingers though.

[u/Cause0 → u/blitzbom]

Not really, that's beginner level cardistry.

[u/blitzbom → u/Cause0]

Yeah, that's why I said having longer fingers helps. I have short fingers and had to work at it haha.

[u/res30stupid → u/Educational_Ad_8916]

This comes up a lot in magic, actually. Penn and Teller: Fool Us is a great example since it's just magicians geeking over their craft.

A great example was Kostya Kimlet. It wasn't just the fact he fooled them with the trick - it was the fact that they had performed the exact same trick earlier that week live on TV and Kimlet was flexing on them, since he designed the trick in the first place and was showing how a master does it.

[u/Educational_Ad_8916 → u/res30stupid]

Penn was one of the magicians in the group was blown away.

Loudly, of course.

[u/NightRacoonSchlatt → u/Educational_Ad_8916]

Teller was also blown away. 

Silently, of course.

[u/Educational_Ad_8916 → u/NightRacoonSchlatt]

Good gag, but he wasn't there.

[u/Luxury-Problems → u/res30stupid]

When he returned for a second time, what he did was a seemingly simple trick to the audience. But Penn and Teller caught that there was no trick and he actually was straight up snatching the correct card out of the falling deck. No gimmick. Just skill and dexterity. And a little bad luck as be can normally do it more accurately.

[u/rikashiku → u/Educational_Ad_8916]

There's this anime I used to watch as a kid. GITS: Stand Alone Complex. In one of the episodes, a group of cops and agents are playing a game of cards. One of them effortlessly shuffles the deck one-handed and flicks out the cards with his thumb.

To me, that was the coolest thing I wanted to learn, and I got close to it. Now I am encouraged to try again.

[u/Drakeskulled_Reaper → u/rikashiku]

The theme was a fucking banger for that show.

It's called Lithium Flower, by the way.

[u/Drogadonte → u/Educational_Ad_8916]

You should check René Lavand