Not sure if you saw it already but definitely check out this (http://spnstoryfinders.livejournal.com/8527037.html), as it has a lot of recs that suit your needs. (And I personally keep updating as I find new ones so there's more if you just saw it when it was originally posted.)

And I think the Jimmy one you're referring to is: And This Skin and Mouth of Mine (Will Not Betray Me Anymore) (http://archiveofourown.org/works/252747) by miscellanium