I took a look at the sites nominated for the Crunchies Best Design award; most of the nominated sites seemed to be relatively simple and nondescript. Netvibes has a fairly complex UI, but it's not overly cluttered.
I think that's a good thing. I'm not a UI or usability person, but I sometimes obsess over the user interface. I like clean, uncluttered designs. In fact, I like white. I like plenty of white space. I like a very focused and simple user interface.
Here are the Crunchie Best Design nominees: