That would be the wife of new Massachusetts Senator Scott Brown. As it turns out, she played said curious-handed girl in a 1980s music video for the group Digney Fignus:

As the Washington Post explains:

After he got a Boston College law degree, [Brown] married Gail Huff, an actress who was known in Boston as the bikini-clad woman in an early-'80s Digney Fignus music video, "The Girl With the Curious Hand." In the video, Huff's curious hand poisons a drink and squirts suntan lotion in the air. ("It means different things to different people," Fignus said in an interview.) Huff is now a well-known newscaster on the Boston ABC affiliate.

Find out what it means to you at about 1:00.