as this stuff changes all the time, it would be nice to have a thread where people post their favorites
  i just found out that liberation dance party (fridays @ dc9) is open bar from 9:00pm - 10:30pm after paying $6 cover (i really got my $$ worth there this weekend) 
 a long-time favorite:  half-priced belgian beers at l'enfant cafe in adams morgan from 4:30pm - 7:30pm on tuesdays 
 this event at the 
O Street Mansion looks pretty cool (the O Street Mansion is easily one of the coolest / most ridiculous places in the city): 
 Grey Goose Martinis, wine tasting and dinner
 Every Monday: 5:30-8 p.m
 $35/person through November
 $40/person through December
 Price includes unlimited beverages, cheese, vegetable basket, and full dinner.