couldnt think of one that wouldnt spoil the suprise:
http://www.externalerror.com/e2v2/shakeitbaby.htm
link shamelessly stolen from another forum:)
Thats really good Panda 
Not seen that before. 
heheh showed it to a few ppl on msn and its got a few laughs,
and its originality more than anything that did it for me;)
hehe, nice one