Since I’m probably never going to actually write this, I give you the podficcer!Darcy Avengers AU (as twitted at kalakirya  a long time ago)

Darcy is a podficcer and Jane writes fic and they’ve known each other’s work since before they met
And Jane is into Stargate and Xena and a bunch of older fandoms. She ran into Darcy when she recorded one of Jane’s old faves
But Darcy mostly does Iron Man RPF and Jane’s not too keen on RPF… But it’s mostly crack and Stark made *himself* into a character, so…
She eventually lets her guard down and  doesn’t care if they’re RPF or M-rated anymore - it’s usually for language anyway
And Darcy does a fucking awesome Tony Stark! She loves the one about the Bunny Invasion of California
And she lets her guard down and listens to Darcy read while she’s busy in the lab… Until that one podfic…
It’s so hot and well written and her colleagues poke fun of how crimson she turned for weeks
Eventually, when she’s going over the applicants for the position of intern she notices this Political Science major
And there’s something very familiar and comforting about her… It takes a while to realize it’s the voice
It doesn’t actually click until they’re in the middle of the desert and Darcy’s very loudly complaining about coffee in the other room

The cracky Iron Man fics were written by Coulson as therapy every time Tony got on his nerves. He’s really fond of the bunny podfic
The explicit one was Pepper’s. Tony discovered fan fic while googling himself and kept making Jarvis read it to her
Then he ran into podfic and was very pleased with Darcy’s impression of him. So Pepper wrote one to see what happens
It made for a very interesting bedroom experience and led to Tony’s decision to adopt Darcy if he ever found her.