Count on FM probably, but leave out pedometer.... and the 3GS already has video
Why would an iPhone need an FM tuner?
So according to the tech spec link, the Nano does all the fancy special effects that Photo Booth has.... Where's the love for the iPhone 3GS Apple?
http://www.apple.com/ipodnano/specs.html
Are we to assume it can take still pictures in addition to video? Because I see absolutely nothing mentioned about a still camera....
edit: wow it doesn't take pictures I guess, rofl.