I've done it for 3 years in a row now, always choosing either Sam or Dean (natch) and this year it's Dean's turn again. And to make it fun, I put in these 3 tv shows: Agents of Shield, House of Cards, Jessica Jones.
So, this year, I get to write a story where Dean Winchester walks into a bar and meets... (can't wait to find out!)
Here are my intoabar stories in case you're interested...
2015 Dislocation - >Sam Winchester walks into a bar and meets…Dr. Daniel Whitehall (Agents of Shield)
2014 Aurelia - Dean Winchester walks into a bar and meets...Zoe Washburne (Firefly)
2013 Waiting on a Ride - Sam Winchester walks into a bar and meets...Badger (Firefly)
and this wasn't an intoabar challenge story, but it is a crossover that starts in a bar...
Partially Sunny - Sam and Dean walk into a bar and Sam meets...Dee (It's Always Sunny)