Concierge.com's insider take:

The newest incarnation of this ultrapopular restaurant/bar/club/live-music venue (it also operates the tattoo salon next door) is by far the biggest and best: In a former Irish pub, a cowboy-hatted American expat known only as "Wally" serves up delicious burgers and other downmarket Yank fare starting early in the night. Later, live, predominantly rock music by emerging musical acts (or local DJ sets) are on offer in the grottolike basement, and the always-packed main space fills to the gills with Berlin's art, fashion, and celebrity crowds. Despite the Irish touches and the odd Chinese trinkets dragged along as decoration from a previous location, the place has a strangely gunslinging, saloon-type feel as well as a low-key dress code. Ladies beware: In the wee hours, White Trash can live up to its name by becoming a bit of a meat market.