You've all probably come across something like this at some point at least once. You're watching a show/movie, playing a game, reading a story, and something pops up. For the purposes of the story itself, it is rather minor, or it is major, but despite holding potential, is never brought up ever again. Either way, you can see something that would be awesome, something grand, if only the ones holding the purse weren't so blind to it.
And, y'know, sometimes you need somewhere to vent. Maybe someone will see this, and do something about it, or it'll just stew in this little corner of the net. But I say, to heck with it.
What little story threads have you come across in your trip through pop culture that you believe would make an awesome idea, but were never explored?