I think users Mimi and Harunobu posted about Letterboxd not too long ago which got me into tracking my movies. Is that what you use as well? I'm less inclined to update that though since I mainly watch anime and there's a real nice community on this site but now I am trying to keep track of that as well. Although since I started that super late in the game I'm not even trying to remember all the movies I've watched since it's just too much, only updating new stuff that I watch.