Interesting question.  It kind of depends on what you're looking for in a club.  If you want high mileage, border-line bordello eperience, I would recommend the Mitchell Bros O'Farrell Theatre (MBOT). Very pricey, but great-looking girls who will do just about anything if you have the scratch.  If you're budget is more limited, you can try LA Gals or Market St Cinema but both places are kind of dicey at night and the girls are real agressive about hoovering the cash out of your wallet.
If you're looking for more of the traditional  'Gentlemen's' Club, try either the Gold Club or Broadway Showgirls.
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