When I'm in the mood to muscle through a sea of yegger-lovin' collar-poppers to get a drink, I usually go to Dirty Pretty.
The venue itself is pretty decent: a large main area surrounded by plush private tables (think: a bigger version of Zuma), a good sized patio with tables, and a wrap around bar that is accessible from anywhere but outside.
Now I may be a little bias on this one because I don't believe I've gone when it's not one of their "free Effin vodka" nights (from 9-11), but holy hell I've never gotten so smashed on ten dollars. The bar tenders are busy as hell, but throw them a nice bone each time and they'll keep the vodka flowin.