All Along The Watchtower by Tesla (Oz, Oz/Angel; hard R; post-series) [lj link]
     Told in a subdued tone that matches Oz perfectly. Raven writes, "This story works on more than one level: as a character study of future, post-series Oz; as an exploration of why someone might choose to withdraw to a peaceful life even though there are more worthy battles to be fought; as a melancholy look at the past. The setting of this story is so vivid that I can absolutely see Oz living this life."

And that mutual grooming thing that chimps do? Also good. If you see typos, broken links, or anything else that needs fixing on this site, please let me know. And always feel free to recommend me fanfic, books, whatever.