well, the iPhone camera telescope add-on (couple of weeks back) definitely ain't gonna sell....

...but this, hmm, actually looks quite good... almost very good!

Bet Apple wish they'd though of it!

and where are the L and R buttons?

But it would be cool if it worked with the already existing emulators on the iPhone (jailbroken only, of course).

There are already emulators for any platform imaginable, and thousands of games to choose from - but with only the screen they are not very fun to play.