Celebrities, heh, they're only human and can be caught out from time to time. I often think we as a society seem to be way too uptight about emotional outbursts, but sometimes they can be completely uncalled for and out of the blue, for example Barry Gibb's sulky outburst on a British talkshow from way back in the mid to late 90s (the look of heartfelt dismay and lost composure on Clive Anderson's chummy face was a sight to behold though). But often signs of strong emotion can be blown completely out of proportion and out of context, like that Internet meme, the Howie Scream.