Adobe AIR (Apollo)
Very impressed by the offline feature. We are currently at a time where everything is moving online, yet we are still unable to remain online 24/7. I think Adobe AIR is able to fill the gap while we try to achieve being online 24/7. I already see a lot of applications for the offline feature.
Check out this demo that I found. It's almost the same as the one presented during the iX Conference. It's always good to know what the technology can do for you.
Oh, I love the way it intergrates with the webcam too. Cool.