This has been brought up 100 times already, maybe we can have this topic stickied already
![Wink](http://www.blackberryforums.com/images/smilies/icon_wink.gif)
. m.youtube.com (or any variation there of) DOES NOT WORK ON THE 8120, nor will it until the release of OS 4.5.
Two sites you can use in the meantime are:
blueapple.mobi
or
tinytube.net (my favorite as it lets you download the videos, in both high and low res versions)