Some undisputably great classics:
The Bat-Bogeys Cometh
by Anise
PG-13
Summary: In his fifth year, Draco was moving towards a dark destiny... and slowly, inexorably, he began to pull Ginny in. Find out what *really* happened between those two during the events of Order of the Phoenix. Harry didn't know the half of it...
http://dracoandginny.com/viewstory.php?sid=747 The More Is My Unrest
by Arabella and Jedi Boadicea
PG
Summary: Draco observes Ginny. This story was written prior to the release of "Harry Potter and the Order of the Phoenix."
http://www.sugarquill.net/read.php?storyid=848&chapno=1