I love when two of my passions intersect. The other, in this case, is Dungeons & Dragons. I played quite a bit in my teens and twenties, but gave up on it when other time-consuming stuff entered my life (marriage, children, home ownership, sucky commute, etc.). In the last year or so I’d been really missing it, so I found a bunch of like-minded fellas in similar straits and we get together every couple of weeks (schedules permitting, naturally).
I recently spotted this:
Geeks are Sexy: Six Geeky Drinks for the Dungeons and Dragons Table
While I don’t recommending getting out-of-your mind drunk while playing (certainly gets in the way of focusing, and unless you’re in the middle of a tavern scene , it can make for some truly less than stellar roleplay… not that I, um, speak from experience…) there are a variety of drinks out there which can certainly lend an extra layer of geekiness to your game. Some are clearly put together for the geek set, while others retain their geek cred through the virtue of their historical appropriateness. Here’s a few of my suggestions: 
My recent favorite, and the first in the beer category, is Wychwood Brewery’s Hobgoblin, a delightful ruby beer. The website characterizes it as having a “toffee malt flavour balanced with a rounded moderate bitterness and an overall fruity flavor.” I will admit to buying this beer primarily on its namesake alone at my local wine and beer shop; however, I was absolutely in love with the taste from the first sip.
In addition to some other Wychwood offerings, they also offer up as appropriate for this category Rogue Shakespeare Oatmeal Stout and Trappist ales (offering Chimay as an example).
Now I know there are many more beers that could fit this category. At the risk of pegging my “Geek Meter”, here are some off the top of my head: Most of your fantasy realms hearken to the Medieval period in Europe, so virtually anything from Middle Ages Brewing seems appropriate. Bad Elf Ale and its brethren come to mind, if you go by name alone and ignore the Christmas art on the label. (I’ve certainly encountered my share of “bad elves” in my adventures.) Weyerbacher also has a few, with Old Heathen, Heresy, Merry Monks, or Prophecy. The Clipper City’s Heavy Seas line would be good if you’re fighting pirates (or are one). Magic Hat Hocus Pocus, Monty Python’s Holy Grail Ale, and Great Divide‘s Claymore Scotch Ale (“is that a sword under your cloak or are you happy to see me?”) also would fit the bill. And let’s not forget all those Stone Brewing gargoyles.
What else could fit in a fantastic realm? What were Frodo and his pals drinking at The Prancing Pony?