One tends not to associate beer, onions, and fun with celebrations of Protestant Reformation. But Martin Luther was known to down a mug or two of his wife's brew, and enjoyed good food and wine as well.
In any case, we're nearing the middle of what they're calling the LutherDecade, which runs from 2008 - 2017, commemorating Luther's arrival in Lutherstadt Wittenberg in 1508. Each year in the cycle celebrates different facets of the religious rabble-rouser's life.
The theme for the LutherDecade year 2011 is "Reformation and Freedom." The series of events planned for 2011 will bring life to the year's multifaceted theme and provide fodder for lively debate and discourse. The event series will open in early March with a symposium entitled "How free is mankind?" See the list of events for LutherDecade 2011
So, why not go and lift one for the Reformation? You can do so in Cathedral Square in Erfurt where "one of Germany's best beer festivals is held" from Sept 24 to Oct 9, 2011.
And the Weimar Onion Market is part of the festivities as well; the "Luther and Weimar" exhibition will be playing at the same time.