UPDATE: Userscripts site has been down for a long time now. I created a Github account and moved the script there. Easier for people to contribute code if they want, or to fix something. By the way this works with Chrome now as well. No plugins needed.
I thought it would be fun to write a Greasemonkey script which means I had to find a problem a Greasemonkey script could solve. The one I came up with was an issue I had with adding new movies to my Netflix queue.
Before writing the script I would hit "In Theaters" and "Coming Soon" sections of the popular movie websites (rottentomatoes.com and such) so I could add movies to my queue before they go to DVD. I would also look at other movies that have been out for a while and check their ratings also. That led to a lot of copying and pasting titles into the Netflix search box. Sites like dvdlater.com are good for the current stuff but you can't search deep into past movies and be able to add them to your queue easily. Plus you can't look at the respective sites ratings on said movie with sites like dvdlater.
So I made a script called Netflix Q Status. This script puts a little Netflix icon next to the titles of movies at popular movie review sites. You can click on this icon and get a popup box with movie info and queue status directly from your Netflix account. You can also add the movie to your queue right from the box. You do have to be a member of Netflix and logged into your account for it to work.
There are other Greasemonkey scripts that do some similar type things this script does like adding Netflix links next to movie names on the popular movie websites but they don't tell you if the movie is in your queue and they don't allow you one click access to all the movie info and the ability to add the movie to your queue without leaving the page.