Dallas Plastic Surgeon, Dr. Michael Bogdan, created this video to help patients understand  tummy tuck surgery .  The video morphs actual patient before and after photographs and highlights the regions addressed during the surgical procedure.

A tummy tuck (abdominoplasty) addresses several aspects of the abdomen, and is best suited for women after childbearing, or for patients who have undergone massive weight loss.  A tummy tuck:

Removes excess abdominal skin (and can remove stretch marks)
Tightens lax abdominal skin
Tightens lax stomach musculature
Flattens the stomach
Pulls in the waist line