Firstly, I think it's clear that there are instances where it's appropriate to 'celebrate' someone's death. For instance, I guarantee if Hitler had been assassinated to end WW2 it would have been cause for celebration. However I'm concerned that in this situation it will just help to fuel the fire of the back and forth hate. While I think America is justified in celebrating the death of one who targets civilians for terrorist attacks (note VERY different from the collateral damage that sometimes kills citizens in war), I believe it would have been better to take a high road and stay more solemn - focusing on the folks who died in 9/11 instead of Bin Laden, who doesn't deserve the attention now that he's gone. (RUN ON ALERT)
Also, no offense meant, but I think that comparing Bin Laden, a self proclaiming terrorist/murderer of thousands, and pop singers/athletes/actors is just plain silly. There's a slight difference between moral depravity and mass murder.