I'm a sucker for h/c fic too, my all time fav is of course Myrna's which is already mentioned above. Another good one which I've just finished reading is by Sapphire,it's where Justin has testicular cancer, she also writes other amazing h/c fics, here's the link to the first one..enjoy!!

http://www.livejournal.com/tools/memories.bml?user=sapphire_3&keyword=Justin+and+Cancer+Series&filter=all