Ari over at CellPhones.org sent along an article called "How Cell Phones Can Help Paleontologists" that might be of interest to some of you out there. Callan over at NOVA GeoBlog also points out another wonderful reason to own an iPhone (I do not sadly): you can add a clinometer application!! Who needs a Brunton (joke - but they are probably similar in price if buying new I guess).
Swing by and check them out.