Oktoberfest in Munich might be the biggest and only famous one outside of germany, but there are at least a couple of others all over germany, like the Cannstädter Wasn or the Oktoberfest in Hannover, that all take place in late september and early october.

You can check out at Kirmesforum.de, when these events will start.

If you like this kind of "entertainment" then I suggest to try a Schützenfest in a small village in the countryside as well.

Then you really know what germany is all about ...