OK, so I happen to be one of the organizers of FF, still it's a not-to-be-missed event. In 2009, the Food Fest expanded to two days and was even better than before.
Usually at the very end of October, FF features nationally recognized speakers covering all aspects of adopting a plant-based diet: Animal cruelty, environment and health. The festival is actually all vegan and features tons of food sampling, great veg-themed products and books as well as non-profits that word for animals. And it's FREE.
The rest of the year, BVS is active in advocacy and has a monthly dining-out at Grasshopper with a featured speaker. Check the website calendar for info!