Not so bad
This one isn't as bad as most of you are claiming.
First, it is not the same as caller ID. In caller ID, the central exchange provides the information on who is calling. In this patent, the information on who is calling is found in a database on the remote device. So caller ID prior art may not invalidate it.
As for the rest of you complaining that this has been on cell phones since 1997, you really need to learn how the patent system works. He filed for the patent in 1988. Whether people are using it today (or even 1997) is completely irrelevant to the topic. What is relevant is whether this was common in 1988. Frankly, from my memory, cell phones in 1988 were the size of a small suitcase and didn't have this feature, so he may actually have something.
Why doesn't he sue every other company out there? How do you know he hasn't received a license from everyone else?
The one issue is that he waited so long to file for infringement, but even that's not so bad. If he already had licenses from everyone else and Apple released a phone infringing on his patent in June 2007, filing in Feb 2008 isn't abnormal. If, OTOH, he hasn't received licenses from everyone else, then he's going to have a hard time explaining why he didn't file against Nokia in 1997.
In any event, this one is not a clear patent troll like so many of the others.