Cali Lewis and interview Greg Grunberg of Heroes, Lost, Alias, and Felicity fame who's conceptualized Yowza!! A location-aware, iPhone specific coupon app. Participating businesses can use a simple back-end web system to set up discount offers which are then displayed on the iPhone app based on current location and/or deliberate search. iPod touch users get a local storage option, and Grunberg announces a special holiday surprise towards the end of the video as well.

It's a trifle long, but interesting to hear both how the app came to life, and how the iPhone can be used to save money and, of course, revolutionize the world...

For more info, check out

Anyone tried it yet?