Marek Kozubal (Clay Center Observatory, at a high school outside Boston). This is cool -- Kelly Beatty called him up about 7 hours before the 2008 TC3 impactor hit the Earth. Marek got on the case, programmed in the crazy drift rate of the body, and set up his roof-top high-school telescope to monitor the light curve. They took several thousand observations that evening until the impactor headed toward Sudan.