My favorite iPad application has to be Flipboard. The layout is clean without being bland and the way it displays content put give it a premier status among mobile content readers.
Being a blogger, I'm a big user of RSS reader applications. For many years, I've been using NetNewsWire. It's a decent application for importing and displaying my feeds, which are synced from Google Reader. In using Flipboard on my iPad for as long as I have - and now with their iPhone application being released just yesterday - I've come to expect more from how I consume content from the Internet. More and more I keep thinking that Flipboard would go well on the Mac, in addition to Apple's mobile devices.
Since Apple has brought many features of iOS to the desktop and laptop playgrounds, it's becoming more and more like the iPad. The touch gestures in the recent iterations of the MacBook Air and Pro models could really help bring a "Flipboard for Mac" edition to fruition. An application like that would work almost identically to it's original iOS version, using the gestures on the trackpad to navigate around. Swipe around between pages of content and have the ability to have more than 2 pages at one time. Swipe left and right to move up and down the timeline of content by publishers. Bring platforms like Instagram to the desktop in a never-before-imagined way and challenge the traditional way of using mobile to interact with those services. Allow me to share content with others by sending an email, tweet, or posting to my wall just like I'm use to doing now. Add all of that with the capability for Lion applications to go full-screen, and a desktop version has the potential to challenge the way we consume content on our computers.
Flipboard is more than just a content aggregator. For me, it's my way of getting the latest in what I'm interested in and it gives me a way to keep up with my contacts on Twitter, Facebook, Flickr and LinkedIn without visiting a ton of different sites separately or have a bunch of tabs open in my browser. I'm more likely to have my laptop open while I'm sitting on the couch in the evening as opposed to my iPad or iPhone. Those devices are great for consuming content whilst mobile, but they seem a bit out of place around the home. At least, they don't fit into my workflow as a content producer.
I can guarantee you that an application like this would cure me using a boring interface like NetNewsWire. People connect with content they can be immersed in - that's what made Flipboard for iPad so popular to begin with. I would love to see that tradition continued onto the Mac.