In journalism, Edmund S. Valtman, a successful editorial cartoonist, won the Pulitzer Prize for Editorial Cartooning. Ene Riisna is an Estonian-born American award-winning television producer, known for her work on the American news program 20/20. Alar Toomre is an astronomer recognized for his research on the dynamics of galaxies. The "Toomre sequence" and "Toomre Instability" are named in his honor. In entertainment, singer and actress Miliza Korjus was nominated for an Academy Award for her performance in the 1938 film "The Great Waltz". Hollywood actor Johann Urb (born January 24, 1977) is an Estonian living and working in the United States. Kerli Kõiv (born February 7, 1987), better known mononymously as Kerli, is an Estonian pop singer residing in the United States since 2005. Psychologist, psychobiologist and neuroscientist Jaak Panksepp (born June 5, 1943) coined the term 'affective neuroscience', the name for the field that studies the neural mechanisms of emotion. Mena Suvari (born February 13, 1979) is an American actress, fashion designer, and model. Toomas Hendrik Ilves, born December 26, 1953 in Sweden but raised in New Jersey, was the President of Estonia.