Weekly Echo draws together images of the things/people/events most in the news/blogs/search engines of that particular week. Really interesting for me - I don't have tv, and I read my news in an aggregator and listen to NPR - in other words, I just don't see many images associated with the news (and this is also pretending that entertainment news is actual news).
It's simple but well done - mousing over images gives you a little pop-up to explain the image (and I needed a lot of explaining for some of them), clicking links you to a news story somewhere about the subject of the image. And soon there will be commenting. Social fun.