An Adelie penguin male builds a stone nest in anticipation of the females' arrival. The males compete over the precious stones, often resorting to stealing to get the best ones.
Jeff Wilson/Discovery Channel/BBC
When Kiefer Sutherland ended his series of very long, very intense days as Jack Bauer on the Fox series 24, few people, including Sutherland himself, expected him to be starring in another TV series right away.
Over the past few seasons, Breaking Bad's Walter White (Bryan Cranston) has changed from meek hero to forceful villain. TV critic David Bianculli says he isn't just breaking bad anymore — he's entirely broken.