Here are some of the things I have done with my iPhone:

Played Colossal Cave, Aurora Feint, and Cube Runner.

Taken photos of my cats.

Ordered a pizza.

Found the nearest convenience store.

Remotely accessed my entire music collection and streamed music to my office.

Let the iPhone listen to a song I didn’t know. It identified the song and told me where I could buy it or watch the music video.

Updated my Twitter.

Kept track of an eBay auction.

I dictacted a note which then got transcribed into text on a To Do list.

Watched an anime music video.

Got directions to a concert.

Texted my friends.

Remotely controlled my Mac via VNC.

Made a few calls.