Was on a committee at a previous company and we started with a committee of about 12 and determined that we had too many opinions. We drilled down to a steering committee of 3, went through the submissions and ideas and presented to the rest of the group. We found that we were able to move through meetings much quicker and make decisions quicker. Then we would let different people within the group be the "leads" for events. Worked out well, we tried to bring in new people once a year and encourage people to support events. People loved our events and they usually involved traveling from department to department and included food, so people got up from their desks and got to meet new people.
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"the price of greatness is responsibility" Winston Churchill