I actually was exposed to TM/Fate well before I had any reason to know what it was. I have always been a bit into Arthurian stuff, and I was going through a sort of... neopagan/pseudo-Celtic music phase, and there's this artist named Heather Dale who does a ton of mythologically inspired music. In looking up her music on youtube to easily show people, as we do, I found a video with one of her songs and it just had all this art slide show thing and I thought nothing of it. Then, when I got into Fate, I realized.........
Spoiler:
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PS this was a looong time before GO and those character designs for the knights of the Round Table, so some weird casting choices.