Update 1/30/10
Know HTML & JavaScript?  Open source PhoneGap lets you create apps for the iPhone and other platforms. (Update: Including the iPad.)
Update 1/30/10
According to Brian Chen's Gadget Lab post, Apple recently made a change to enable the iPhone and iPad function as web phone:
"ICall, a voice-over-Internet Protocol (VOIP) calling company, said the latest revisions in Apple’s iPhone developer agreement and software development kit enable the iPhone to make phone calls over 3G data networks. ICall promptly released an update to its app today, adding the 3G support...Because the iPad includes a microphone and will run iPhone apps, that means the tablet will gain internet telephony, too." Read More http://www.wired.com/gadgetlab/2010/01/iphone-voip/#ixzz0e5aErE6q

Interactions in Apple's iWork Applications for iPad


RELATED
Interesting iPad Interactions  -Craig Villamor
New Multi-touch Interactions on the Apple iPad - Craig Villamore & Luke Wroblewski
The iPad's Actually New UI and Gestures -Matt Buchanan, Gizmodo
-Multi-finger multi-touch
-Popovers
-Media Navigator
-"Long" touch and drag
-Layered UI elements
iPad.org Forum


ClarkeHopkinsClarke iPad Wall Concept for a Library
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