Firefox only (Win/Mac/Linux): Firefox extension Unsorted Bookmarks Folder Menu adds a new folder to your bookmarks menu so you can get access to starred bookmarks without having to open the organise bookmarks dialog.
Once you've installed the extension, just head over to the Bookmarks menu, where you'll see a new Unsorted Bookmarks folder containing all the pages that you've used the star bookmark feature to save quickly. It's a very tiny extension that definitely won't appeal to everybody, but if you frequently use the star bookmark feature and are tired of opening up the Organize Bookmarks dialog to find them—a pet peeve of mine, this might be the extension for you.
Unsorted Bookmarks Folder Menu is a free download, works anywhere Firefox does. Astute readers will probably point out that you can also double-click the Star icon in the address bar to easily move the bookmark to another folder while you are bookmarking in the first place.