There is also VIP in Catonsville, MD as well as Q Ball in Springfield, VA.
Not sure if either of these are any place to get some action but both are nice rooms.
I'll advocate Big Daddy's in Glen Burnie as some others have stated here previously. Great equipment!
My local haunt is Triple Nine's in Elkridge. I don't gamble but if you are just looking for someone to bang some around, let me know. VIP and Big Daddy's are also within a reasonable distance from me as well.