11th Annual Smithsonian Photo Contest

My favorite was this one, but it was disqualified because the submitter wasn't the photographer:

A wall cloud near Omaha, Nebraska. "This cell grew exponentially over the next 16 minutes, split twice and spawned three EF4 tornadoes with $67.4 million in damage to residences and crops." photo by Chris Bellamy

There are some other cool ones to vote on, including a little girl bottle feeding a lamb.  Check them out here.