Volunteering might seem like a huge commitment, but it often isn't hard to find ways to free up some time. Statistically, the biggest single difference between volunteers and nonvolunteers is how much television they watch. Volunteers spend about 15 hours a week tuned in, compared with 23 hours for nonvolunteers. Those 8 hours a week add up to more than 400 hours a year enough time to take on any number of service projects. And there's always TiVo.