where_no_woman ran a commentficfest on this theme a year and change ago -- I'm too lazy right now, but their tag system is pretty comprehensive, shouldn't be too hard to find.

And someone wrote a really good post about how not to write Sanctuary fic, specifically, but I can't find it now -- I know I got there via penknife, so they'd probably know.

... I'm not being very useful, am I.