The iPhone, when you think about it, is really more of a handheld computer than a phone. Sure, it can make phone calls, but any phone can do that. What makes the iPhone unique is its web-surfing abilities and legions of add-on programs. It's just in a phone's form factor.
A company called OLO Computer is working on a small laptop that'll cradle your iPhone and allow you to use it with a large screen and full keyboard. You'll simply pop the iPhone into a space where the trackpad usually sits, turning the iPhone into a trackpad. You'll then be able to type out e-mails or text messages using the keyboard, sending them through your phone. It's a clever idea, one that may or may not catch hold depending on how much it costs. We'll see how this one turns out.