Super addon for greasemonkey!! Thankyou so much.
MovieDude is like at least 10 scripts in one and it has a nice configuration dialog where you to determine which links are shown for the movie pages, and whether the links appear as icons or text. If you are somewhat source code literate, the script is written in such a way that it is easy to add additional sites to it if you want. If you are less technical, it works great out of the box. Mainly I use it to go back and forth between Netflix and IMDB for a movie to try and figure out if it is worth renting.