Chrome: There are lots of ways to brighten up your new tab page, but Delight is one of the most inspiring (and beautiful) I've seen. It's functional too: It combines your most-visited pages, the weather, your Chrome apps, bookmarks, and history, with a gorgeous time-lapse that makes you just stop and stare.
I've been using Delight for a while now, since before it officially launched, and of all the new tab add-ons that I try, this is one of the few I've kept installed for as long as I have. It loads quickly, the time lapse video doesn't stutter (it stutters a little on Windows, but that could be my PC), and I have complete control over what's shown on the edges of the scene. The video above gives you a quick look at how it all works (although be warned, there's music in the video, but the extension doesn't play music, just so you know!)
On top of those gorgeous scenes of spinning night skies, natural wonders, and other gorgeous naturescapes, you can turn on the usual list of your most frequently visited sites, add a few cities you'd like to track the weather and time in (and toggle 24 or 12 hour time, or Fahrenheit or Celsius temperatures), and add quick links to your Chrome apps, bookmarks, and browser history. If all that is too cluttered for you and you just want the scenery, you can turn it all off, too. Hit the link below to try it out.