Best Application for Managing Movie Lists?

Hello!

Anybody ever see a movie trailer and think "gee, I want to see that" and then 2 1/2 years later you see it again at a redbox? You then re-remember that you wanted to see it but you completely forgot about it. Well...

If any of you are familiar with the website "goodreads.com" it's an awesome website to track your books. You can create custom "bookshelves" (aka custom lists). So for example, my bookshelves include:

1. All
2. Read
3. Currently Reading
4. To Read
5. Stopped Reading
   

I was wondering if anybody knew of a website/application that did something similar for Movies. A lot of things I've looked into so far don't allow you to make custom lists. Or if they do, adding to those lists is not very practical when doing a large chunk of movies (IMDB). So for example, my movie lists would look something like:

HTPC (actual movies contained within XBMC, my library, my HDD)
I Own On DVD
Must Watch
Coming To Theaters
Favorite Movies
Seen It
1999-2000 Want To Watch
2000-2010 Want To Watch
etc.

So if anybody has any good suggestions for a website, or an application for a windows machine, apple device, android, or XBMC applications that already does this, I would really appreciate it. Of course it would be awesome to find one that integrates with all these various platforms, since I use all of them.

Again, XBMC is awesome for your actual movie library but it does fall a little short (which I know isn't its intended purpose) when creating lists for movies you don't own.

Thanks!