This is a trilogy by trillium33, all Don/Robin, all character-driven.
Post-"When Worlds Collide." Sweet and angsty.
Robin figures out whether she can deal with dating a Special Agent (humor and angst).
Post-"Arrow of Time," and the real reason I'm reccing this little trilogy. This is very close to the tag I wanted to write for this ep, with a lovely dollop of romance on top of the thinky-thoughts. Really, this is fantastic.
The Drowning Chain, by july_july_july
An amazingly done little case story. Stunning Dean-voice, solid characterization, and a delightful twist to end it. Set during season 4, but no spoilers. R for language.
For the Third Time That Day, by a_starfish
This is a great piece of h/c fan art. :) (For my SPN betas: only you will know why I love this so, so much. Thank you for pointing it out, sarcasticval!)