I agree that WebEx is great for those of us that have frequent remote meetings. In a thread on "Fun Mobile Internet Experiences" we posted on community a few months back it was noted that email and SMS/MMS remain dominant apps - so many people rely on these.
There are some awesome "hidden" apps I'm certain people would say they love, but most people don't even know they're using them ... the little apps that "auto-connect" your device to the corporate WiFi and/or VPN network. I know the Apple iPhone uses Cisco security and WiFi technology to auto-connect employees to corporate resources without needing to go through all the cumbersome 802.1x setup stuff we used to do in past.
And if we were ask any of the billions of machines that will soon join the Mobile Internet to vote on their favorite app, as part of the whole advent of "machine-to-machine" connection underway, I'm sure near top of their list would be auto-connection apps via WiFi Direct