I was playing around with Google Wave the other day and discovered you can do a few cool things with your Wave interface to make managing multiple waves more easily. Rather than try and explain it I thought I would put together a video for you and upload it to Youtube.
Enjoy this look at Google Waves advanced user interface controls, I would recommend pressing the HD button so you get a nice clear picture.
If you want to learn more about Google Wave purchase my Ebook The Unauthorised Guide to Google Wave, it contains a good look at Google Wave Preview and some of the more advanced features included in over 20 pages.