Rated 4 out of 5 stars
Very useful app. I think the "Download this video" link should point to the standard mp4 version of the video though (i.e. &fmt=18) or at least give you the choice of what type to download as opposed to just having the flv vid.This review is for a previous version of the add-on (2.0.1).
Thank you Gav83 for your comment.
Indeed, with the upcoming release you will be able to download a given video in mp4 and 3GP formats.