Orkut has now added a favourite videos tab where u can post ur videos from two video sites owned by Google- YouTube and Google Video
Wanna Know more for help straight from
Horse's Mouth Click Here
Reason for this new feature From Official Google Blog
rather than sending multiple emails and IMs to share the video URL,
wouldn't it be nice to have a feature for sharing videos on orkut?
So from now Just copy the video URL from your favorite YouTube or Google Video
hosted videos, and your friends can enjoy watching your top videos through orkut.