I've noticed and been very impressed by an organization that I've noticed in my neighborhood in the 3rd Ward of Houston.
1000 Hills Ministry International conducts church services and outreach for the homeless 7 days a week. The organization serves Over 4000 meals at 55 church services weekly! in Texas, Mexico, and other Latin American Countries. You can learn more and support at http://www.1000hills.org/about1000hills.html