1. On YouTube; copy the code from the Embed box - you can find it in the About This Video box when you're watching the video.
2. Login to your account and go to the Profile tab.
3. Click the (Edit) link next to the Bio header.
4. Paste the copied YouTube code into your Bio and Save Changes.

Note: If the video is yours, you can get the embed code from the Embed HTML box on the Edit Video page (http://www.youtube.com/my_videos_edit).

For YouTube videos, there is the option to customize embedded players. For more information, visit their Help Center on Custom Players.