Son of SmartPart released!
First Jan Tielens created SmartPart as a way of quickly deploying any ASP.NET control as a Web Part. Then WSS SP2 made it possible to upgrade your WSS boxes to run on ASP.NET v2, though without being able to take advantage of v2 features.
On Sunday, Jan released Son of SmartPart which will allow you to host ASP.NET v2 controls including ASP.NET Web Parts inside WSS Web Parts! Check out Jan's post and the GotDotnet workspace, this is pretty cool.