Google's Matt Cutts, head of Google's spam fighting group just tweeted for help in identifying "scraper sites" in google search results -- and particularly scraper sites that are ranking higher than the original page.
The tweet from Cutts reads: "Scrapers getting you down? Tell us about blog scrapers you see: http://goo.gl/S2hIh We need datapoints for testing."
The link in Cutts tweet leads to a Google Doc form that asks for the exact query where there's a "scraping problem," along with the exact URLs of the original and scraper pages. The form explains that Google "may use data you submit to test and improve our algorithms." See the screenshot below: