The out-of-the-box look and feel of SharePoint 2010 is a lot nicer than the 2007 version. Be that as it may be, you still might want to customize your site collections. I've been looking into a quick and easy way to do this using a feature in a sandboxed solution and I'm happy to say it's not very hard.
I know a lot of people don't like the Ribbon, but I personally love it. It's being put into more and more of Microsoft (and third party!) applications and SharePoint 2010 is no exception. But how do you go about and customize it? I've been looking at doing so for the last few days, and I'm glad to say that so far it's not too tricky.