THE TRUTH ABOUT WHOLE GRAINS, ON ABC NEWS� �20/20,� FRIDAY, FEBRUARY 24

Plus: A Barbara Walters Exclusive: Sarah Jessica Parker; Deborah Roberts Goes Behind the scenes of �Dancing with the Stars�; Food for Thought � Get Ready to Rethink Your Grocery List

The anti-carb craze that swept the nation might be ending thanks to new research that shows whole grains can lower the risk of heart disease and some cancers. Bottom line: �good carbs� or �whole grains� are back in style. Literally hundreds of products � everything from cookies to crackers to bread � touting whole grain goodness are popping up on supermarket shelves. Just last week the Food and Drug Administration issued preliminary guidelines on �whole grain� food labels but, as ABC News correspondent JuJu Chang reports, things are just as confusing as ever. �20/20� puts whole grain labels to the test, FRIDAY, FEBRUARY 24 (10:00-11:00 p.m., ET) on the ABC Television Network.

Also: Actress Sarah Jessica Parker speaks candidly to Barbara Walters about her personal and professional life.

And: Over the past weeks, millions of viewers have tuned in to the hit television competition show, �Dancing with the Stars,� to see celebrities dance the tango, jive and cha cha, leading up to this Sunday, when one will be crowned champion. From the fierce competition to the intense rehearsals, what really happens behind the scenes of this show packed with motion and emotion? ABC News correspondent Deborah Roberts gives viewers all-access to the action, and talks to the celebrity dancers, including the three finalists, former 98 Degrees popstar Drew Lachey, WWE (World Wrestling Entertainment) wrestler Stacy Keibler and Super Bowl legend Jerry Rice, as well as competitors Lisa Rinna and George Hamilton. Roberts also takes a spin across the dance floor with her very own ballroom dance lesson.

Plus: Get ready to rethink your grocery list as �20/20� takes on some of the fables on our tables including: brown sugar is better than white sugar; too much sugar makes kids hyperactive; and expensive coffees taste better than cheaper brands (originally aired April 2005 in �Food: Myths, Lies and Straight Talk�).

�20/20� is anchored by Elizabeth Vargas and John Stossel. David Sloan is the executive producer.