The iPhone really really needs the ability to forward a contact (or part thereof) to someone by SMS (or even email). The ability to forward an SMS might be nice too (or the ability to copy/paste text so as to do it manually, not to mention other things).

The SMS feature is one of the iPhone’s best – chat style display really really works (reviewing old messages is awesome – how did Nokia not think of this?) – but this is sorely lacking, I hate having to pull out a pen and paper just to forward a number.