Well I'm not the type to ignore but I would be a little more sneaky about how I handled it.  If I could, I would turn the tables on the person in a joking way.  In this way I would bring to light what the person had done to everyone but at the same time I managed to keep it light.  Most people do not agree with bullies they just choose to stay out of it.  By bringing it in to the open in this way - I publicized the behavior, kept my dignity and put the spot light on the offender.