Pay It Forward: 'The Blind Side' Spurs Generosity

This season's box-office smash-hit "The Blind Side," which chronicles football player Michael Oher's heart-wrenching path from poverty and homelessness to NFL stardom, with the help of an unlikely family, has touched a nerve, inciting many to give back.

Oher's adoptive mother, Leigh Ann Tuohy, told "20/20" that since the movie opened, her family has been flooded with letters and phone calls from others who feel inspired to pay it forward. Some are even planning to cancel their winter vacations and instead use the money to help someone in need.

Watch "The Blind Side: The True Story Behind the Movie" on a special edition of "20/20," Tuesday, Dec. 29, at 10 p.m. ET

Ways to Give Back: Donate Your Time

Boys & Girls Clubs of America: This national organization seeks to help boys and girls reach their full potential through enrichment and mentoring programs at youth organizations. With more than 4,000 clubs in all 50 states, it gives many kids, who do not have role models at home, a positive outlet and a place to find support, companionship. Click here to visit its Web site.

Big Brothers Big Sisters: This national organization provides one-to-one youth mentoring programs in communities across the country. Volunteers serve as positive role models for kids, and help promote self-confidence and keep them on track. To learn more or get involved, visit its Web site.

Black Women in Sport Foundation works to help female athletes achieve their full potential. The organization runs after-school and mentoring programs in the Philadelphia area.

Help Kids Like O.C. Brown

Michael Oher's story is not the only one to inspire you. "20/20" told the story of 17-year-old O.C. Brown, a star tackle from northern Memphis, Tenn., who got the boost he needed, from a family of strangers, to play college football and get the first-rate college education he never imagined was possible.

Brown's success was made possible through the generosity of Mike and Billie Ray's family. He was mentored by Man Rise, a nonprofit Christian organization, which works with high school football players in the Memphis area and teaches young athletes how to cope with everyday situations that arise at school and on the athletic field. To learn more about Man Rise and its work in the Memphis area, visit its Web site.