I'll answer the four interests I listed in another recent question on "what is your current fixation?"

Star Trek: My parents loved it and had TNG and Voyager in the background often when I was a kid, but it wasn't until around high school that I actually started taking it seriously... even more so than they did. Everything clicked when I saw the episode "Remember Me", and was kinda inspired by how Beverly figured out she was trapped in a bubble universe as well as the collaboration between the crew elsewhere in the episode.

Ace Attorney: whoisthisgit's "Creepy Bad Endings" series covered the final case of Justice For All, and the game looked really cool and unique to me, so I downloaded the original trilogy.

Rhythm Heaven: I think my sister got me into it years ago, but I can't remember really. I got back into it recently because I wanted ROMhacks to use to test a GBA cartridge dumper/flasher I got and Rhythm Heaven Silver was one of the first that came to mind. (Unfortunately the bootleg cart I used didn't save properly, but I played the whole thing on emulator anyway.)

SM64 A Button Challenge: Another one my sister got into first, she kept quoting "I do build up speed for 12 hours... to explain why, I have to talk about parallel universes". But it wasn't until Bismuth did a video series on the A Button Challenge that I understood what she was talking about. I got back into it recently because I wanted more content about video game glitches in general.