I'm assuming you know for a fact that it is bin laden? It would be really embarrassing if you beat the crap out of some guy, called the feds, only to find out it's some guy named din laben.
Here's the thing, if you attack bin laden, then you might as sign a death warrant for yourself. If you were the guy that attacked bin laden, your name would be all over the news. That means every terrorist in the world would want a piece of you and your family.
Now if it was a life and death situation anyways (plane is getting hijacked), then I might as well tackle him and try to get a shot at the family jewels. If he had a knife, I'd rush him with a pillow in one hand, hold my other arm out to block his stab, and try to kick him in the balls. If he still tried to get up after that, I'd probably try to snap his neck. He looks pretty skinny, so I'm assuming I can overpower him. But he's tall, so that means he has good reach.
dfi