Older LG sets (tested on C9 OLED) had security vulnerabilities you could use to root your TV and then do "??????" you wanted with them. WebOS as a platform causes a lot of unproductive discussion surrounding it's ecosystem and such but if you want to "hack" or actually have a shell on your TV it's great for that to do anything else you want. Personal favorites include changing the default screensaver behavior to the bouncing DVD logo, running Chocolate Doom, and a port of Space Cadet pinball natively. More info here - https://rootmy.tv/