How come no-one has mentioned Bloch's reviewreview of Milne's "Étale cohomology" yet?
"In short, [étale cohomology] is a gal all the boys should be pursuing. If they're not (and they're not) perhaps it's because she's misunderstood, or more precisely because she's not understood at all. Enter the good doctor Milne with an impressive tome revealing all, including diagrams of her private parts."
http://projecteuclid.org/DPubS?service=UI&version=1.0&verb=Display&handle=euclid.bams/1183548011