If you're a 30 something or 40 something, Zanzibar is a great place on Friday night. The music is a mix of contemporary and old school on the main dance floor, and the lower floor features Caribbean music. It's spacious and, in the warmer weather, there are patios overlooking the Potomac. If you're lucky enough to know someone who belongs to the private club upstairs (or even better, you're a member), that's the place to be. There's even more room to move around and the crowd -- for us old heads -- is more our age. Another nice patio here overlooking the marina....very nice in the summer.