Refuge -- How to Love a Slytherin in 7 Days by anon (EDIT: drarryisgreen) over at hd_smoochfest
because it's got some stuff: quality writing, great pacing (it does not feel as long as it is, and I could learn a thing or two), great characterization (we're talking flailing, entertaining, hot, sexy Draco; sometimes oblivious, sensitive, boyish, curious Harry), and, oh yeah -- METAL. Like guitars and sh na na na na metal. This fic was original with an "OH-My-God," people. Do read. Do review!