Disclaimer The opinions expressed herein are my own personal opinions and do not represent my employer's view in anyway.
I'm using the new ToolStrip and ToolStripContainer in our VS05 application and it looks hot! However, I've had a lot of trouble getting the toolstips to behave and stay where I want them in design mode.
This morning I discovered that using the Document Outline works really well for moving stuff around on your winforms. Now it all looks sweet.