Apple rejected Pull My Finger stating:

We’ve reviewed your application Pull My Finger. We have determined that this application is of limited utility to the broad iPhone and iPod touch user community, and will not be published to the App Store.

That was a super lame explanation by Apple. How can Apple decide whether the application is of utility to the users, when there are tons of apps which are utterly useless in the AppStore like TouchWood and even $0.99 Rubber Duck