Resurrection, Reconstruction & Redemption (http://archiveofourown.org/works/455066/chapters/781852) by Elspeth Dixon and Seanchai, of course, which was recced here at some earlier point, which is why I won't be reccing it.

I can't recall the other one off-hand (I'm at work right now, ssshhh), but I know there's one more really epic fic. I'll go looking for it. Probably not until tomorrow evening, though, because tonight: Iron Man 3!! *cue fangirl flailing*