haha. my friends and i really liked one in roppongi called lexington queen. it’s actually in a basement down an alley (hard to find, but really safe—a good, nonsketchy crowd). ask around for directions. it was 3000 yen (about 30 bucks) for all-you-can-drink, all night (clubs are open until 5am there). print a coupon off the internet and use it during the week, and the cover drops to about $5.

it’s a silly club, but good for getting drunk with friends and dancing. word of warning though… the crowd is mainly foreigners, expats, military. if you’re looking for an “authentic” experience, this might not be the place.