Between the two new features from Google and Bing, I'm going to have to go with Google's as the best and most relative. So we'll start there first:

Google's Fast Flip
Google's /news section is a fast way to get you upto speed with the news, but admit it, it's not that visually appealing - links and text - and have also just one source to read highlighted stories from is a bit of a drag. So this is where Fast Flip comes into the picture. Flip lets you search up a topic and gives you a full page of site preview's to check out, all from big named news sites and magazines, to give you the news that YOU want to read. It looks nice and well organized, but sometimes the text in those preview panels can be quite small.
My only huge gripe with Flip is that the stories presented are broken up into categories like Popular and Recent. I think copying Twitter's trend function would be a perfect addition, as anyone could get onto Flip and stay tuned with what's happened through out the day's events.
Give it a Try

Bing's Visual Search
Looking for vacation spots or maybe prominent players in a professional sports team? With Bing's new Visual Search feature you can scan through categories and find search results once you've found the image you've been looking. Let's say you choose the San Fran 49ers from the image of the NFL teams displayed above. Well, once you've selected them you'll be taken to a common search results page with the image as your keyword. Why you wouldn't have just typed them into the search box is what I'm asking.
I don't see the proper application or practicality in this feature, so I'm not exactly sure what it's trying to accomplish. But regardless it's something you may want to try out for yourself before passing judgement.
Give it a Shot