As she continued to promote `` Just Say No '' , she appeared in an episode of the popular NUMBER@1 sitcom Diff ` rent Strokes and in a NUMBER@2 rock music video , `` Stop the Madness '' .

In addition , PERSON@1 appeared as herself in an episode of the popular sitcom Diff ` rent Strokes to underscore her support for her `` Just Say No '' anti-drug campaign .
