All the good beer in Belgium is made by monks. According to many that I have talked to and a few websites Westvleteren 12 (shown here) is the best beer in the world. Today some of the guys and I went to the abbey of Saint Sixtus of Westvleteren
where it is made. They make very little (something like 500,000 liters a year) and were sold out soon after we got ours. For this reason they only alow one case (24 bottles) per car. I haven't tried any yet but I'm sure it's good stuff.
An interesting note, the bottles don't even have a label. The only identifying mark is the cap. They make three types, yellow (the 12, dark), blue (the 8, dark) and green (blonde). The 12 and 8 are least common, like I said earlier they sell out of these quickly. The green is more common and can be bought at the abbey most of the time. They also say that you should let the 12 and 8 sit vertically for at least 6 months for the best taste. Apprently it makes it much more potent too, reaching around 12% alcohol.
The Belgians must take their beer seiously when we showed up the military was present. I geuss they were protecting the monks from crazy drunks.