[Flash 10 is required to watch video.]renderVideo(“video_player_12837861215”,’http://api.tumblr.com/video_file/12837861215/tumblr_luoqshPx8a1qzlco2′,500,805,’poster=http%3A%2F%2Fmedia.tumblr.com%2Ftumblr_luoqshPx8a1qzlco2_frame1.jpg,http%3A%2F%2Fmedia.tumblr.com%2Ftumblr_luoqshPx8a1qzlco2_frame2.jpg,http%3A%2F%2Fmedia.tumblr.com%2Ftumblr_luoqshPx8a1qzlco2_frame3.jpg,http%3A%2F%2Fmedia.tumblr.com%2Ftumblr_luoqshPx8a1qzlco2_frame4.jpg,http%3A%2F%2Fmedia.tumblr.com%2Ftumblr_luoqshPx8a1qzlco2_frame5.jpg’)

Facebook for iOS shakes if you select the sidebar section you are currently viewing, just like Mac OS X’s login window when you enter an incorrect password.