Other news apps exist, but no news app offers quite the polish of CNN on the iPad (free in the App Store). The app combines videos and cleanly displayed articles to keep you abreast of all the news that's fit to consume. The app is very visual, with lots of photographs, easily readable text, and high-quality video to keep you informed. You can even watch the network live within the app.
Dropbox (free in the App Store), a free Web service, lets you create a folder on your Mac that syncs automatically with whatever other computers you tell it to. The iPad app isn't beautiful, but it does afford you access to all the files and folders you store in your computer's Dropbox folder. You can upload your saved photos and videos to your Dropbox folder, or open saved files in compatible apps on your iPad--including word processing documents, PDFs, images, and MP3s.