Well, you know, the Yuletide archive is open, so if I had lots of time to kill I'd be going spelunking for fandoms I know. (I wrote three YT fics myself this year.)

Then there is the Most Awesome Movie Review Ever (a hilarious pillorying of the Starship Troopers movie): http://www.sff.net/people/doylemacdonald/r_startro.htm