Over 35 brews are available (with their appropriate accompanying glass ware!), but Chang, Leo, and Heineken have been banned from the building.
It's pricey, but the beer is fantastic.
All beers are bottled, and include Palm, Kwak, Maredsous, and Chimay, amongst the more familiar Hoegaarten and Leffe crowd. The food, frankly, is terrible for the price.
Go for a beer and eat somewhere else. Beers from 220 baht.