Batutta
Major Contributor
Well, not exactly, but if it had landed anywhere near a populated region, many people would have died, and agricultural output worldwide would have declined for a few years as the dust cloud dispersed and partially obscured the sun--
http://news.yahoo.com/s/ap/20090304/ap_on_re_us/asteroid_close_call
http://news.yahoo.com/s/ap/20090304/ap_on_re_us/asteroid_close_call