Through 10/27, Zeppelin Hall will be celebrating Oktoberfest with oompah bands, dancing, food, beers, etc... Haven't made it down there to see how often they're actually doing it up, but it's a nice space and worth checking out. It's pretty reasonable and the beers have been in good shape each time we've been down there.
From this Thursday, the 24th through Saturday, the 26th, Iron Monkey will have some Oktoberfest and pumpkin beers on tap with a six pour sampler available. The Monkey's a pretty cool spot, though definitely much smaller and more upscale than Zeppelin if you're looking to chow down.
And for some non-JC Oktoberfest news that completely blew my mind up, check out what's going on at the Milford Oyster House. This is a pretty serious hike from JC, but sounds freaking awesome. Oysters and a pig? And Oktoberfest beers? Ate here with R a few months back and it was excellent, so I would completely advocate checking this out if you have the chance.