ones i've liked so far:
hojong, sungjong is mad when they don't win mcd (this one's short!): http://infinitesanta.livejournal.com/14315.html
woojong office au: http://infinitesanta.livejournal.com/13602.html
2woo, woohyun looks after dongwoo etc.: http://infinitesanta.livejournal.com/12916.html

and i haven't finished this one yet but it's intriguing, ot7 in a supernatural setting
http://infinitesanta.livejournal.com/15233.html