Pop! Hi I'm on the dev team for GameTable (the app mentioned at the top of this thread). You guys have some GREAT ideas - many of them are definitely on our roadmap. We've also started licensing discussions with some familiar game companies - but at this point we're only planning on launching with a handful of public domain board games (chess, checkers, etc) plus a virtual deck of cards.
We've been working for on this app for a while now (back when the iPad was just a bunch of rumors) making sure the controls are super intuitive. Regarding secretive elements, we've built in gestures to "peek". For example, in the virtual deck of cards, you can slowly turn a card over to see its face (of course you'll want to hide your cards with your other hand so your opponent can't see them). In the current build, the "pass and play" method won't work - because if you tilt the iPad, all the pieces would slide to the side of the table

This will probably be an option (you can disable) in the final version.
Good to see some of you are as excited as we are..
Ryan