[thfuran]

Old analog tv over coax used to work with the cable poorly seated. You could even disconnect the cable entirely and just point the conductor at the plug and still get a(n admittedly quite noisy) picture as long as the cable end was near enough.

[Retric]

I had that happen as a kid and never figured out what caused it. My Atari was giving a very snowy image but I kept playing for a while. After dying I go to fiddle with the cable and it’s not even plugged in.

Honestly kind of messed with me at the time especially as I couldn’t replicate it.

[Arrath]

Okay, that's pretty cool