First, I found this kalidescopic roundup of politicians, press personalities, and academics reacting to WikiLeaks, collected by Alexis Madrigal of The Altantic, to be remarkably full of insight.
Second, as a fun way to waste time, this utility called CableGateRoulette allows you to surf through random US diplomatic cables. So far I've learned more than I ever wanted to know about how internet savvy Azerbaijani youth are, the several difficulties of running a bowling alley in Turkmenistan, and organized criminal activities against the Catholic Church in Nicaragua.