Tremendously cool opening sentence:
“When the crew of the Virginia scallop trawler Cinmar hauled a mastodon tusk onto the deck in 1970, another oddity dropped out of the net: a dark, tapered stone blade, nearly eight inches long and still sharp.”
(From the Washington Post article, “Radical theory of first Americans places Stone Age Europeans in Delmarva 20,000 years ago,” which I was guided to by Marginal Revolution. By the way, what has happened to paragraphs in newspaper writing? That opening sentence is also the opening paragraph. The first ten paragraphs are composed of twelve sentences total.)