Playing with Clusty, the new search engine that groups results in clusters and am delighted to find out it has tabs for gossip and shopping (powered by Biz Rate), as well as an encyclopedia tab that features Wikipedia. The service allows you to add additional tabs for eBay, blogs and some other things, and to build your own searches, specify your sources from a list, and add then as custom tabs.
Only issue is that some of the data looks a little funky--Richard Avedon's stroke ended up in a list with AJ McClean and the Beastie Boys, somehow...but hey, it's beta.
(Oh, and by the way, the logo is wonderful--looks like a retro hipster/trucker hat patch.)