[Sangetsu]

Tell the people at the bar that you were the star of the movie "Borat", you look enough like him that they'll probably believe you, and you might get some free drinks in the bargain.

Stay away from the clubs with Nigerian doormen. Take only enough cash to pay for what you are going to drink, put your credit cards and extra cash in your shoes. Someone else posted here about getting drugged and robbed at a club in Roppongi last week.