One misconception I have heard is that SharePoint 2010 is completely based on Silverlight. While SharePoint does use Silverlight now in various places, I would say most of it is still based upon regular ASP.NET pages. I haven’t seen anything that actually requires Silverlight yet, but it does make things prettier when you have it. This is just a brief overview of some things you might see. For example, one of my favorite new things is the Create page. If you don’t have Silverlight installed, you get something that looks like this.
As you can see it looks a lot like the traditional Create page in previous versions of SharePoint. However, one thing you might notice that’s new on this page is the Improve the Creation Experience - Install Microsoft Silverlight link. It gives you a link to install it and the next time you go to the create page, you get a modal window, that looks like this.
As you can see the experience is much nicer. When you hover over each time, you get an effect and all that pretty stuff. You have various ways to filter and categorize what you can create as well. If you are worried about your settings when creating a site, don’t worry they are neatly tucked away under the More Options button. Here is what that looks like.
The last thing to mention is that there is a Silverlight web part included now (which I am sure you have already heard about). This is nice because it makes it easy to include your own Silverlight applications without having to rely on third party web parts or writing your own.