Beautiful script. Does what it says without problems, includes a beautiful and easy-to-use config dialog, and has tons of desirable features. For example:

I used to use MTube to stretch my video window, but MPlayerPlug-in had a tendency to freeze up my Firefox when used with YouTube.

I tried several other scripts which could force high-quality video and prevent auto-play, but most of them were either glitchy, ugly, or interfered with Video DownloadHelper. (I prefer to use the same tool for all video sites)

I finally found this while looking for a script to turn off video captions and annotations and it was love at first sight.

I wish more scriptwrights would put this kind of care and effort into their work. It makes me kind of embarassed to have been too busy to either update or remove my own obsolete scripts.

In addition all great features, this script is well maintained, the author keeps it updated and constantly improving.

This script offers many options for customizing YouTube, from changing video size to removing elements to hiding comments.

Definitely recommended for YouTube users.

It has everything, if not more that i like about youtube.And if he doesn't have everything in the userscript that i want, his noted them down.

The best script compare to others.
Cause it have a lot of functions and offers you a clean space to view YouTube videos.
You can free download YouTube Videos too with this script too.
:)