A gifted choreographer, tireless teacher, and beacon to the Washington area dance scene for more than 20 years will be celebrated in a dance concert tonight, the 2nd Annual Benefit for Eric Hampton. Last year, Hampton was diagnosed with Lou Gehrig’s disease, a debilitating condition that attacks the nerve cells and weakens the muscles. Hampton was a principal dancer with the Washington Ballet and served as its resident choreographer. Until late last year, when health reasons prevented him from working, he was the resident choreographer for the Maryland Youth Ballet and directed his own company, Eric Hampton Dance. Both companies will perform tonight, along with five other area groups: Bowen McCauley Dance, CityDance Ensemble, CrossCurrents Dance Company, DC Dance Theatre, and the event’s host, Tony Powell/Music & Movement. Many of the company directors and their dancers are former students of Hampton’s—tonight’s performance is evidence of his far-reaching influence. At the Kennedy Center’s Terrace Theater. $25-50. (202) 467-4600. (Holly Bass)