There are sexy doctors and detectives, teachers and techies. But no vocation in filmdom is as consistently steamy as espionage. No matter which side of the gender divide you view - and regardless of whether the operative in question is a good guy or a bad guy - spies just seem to ooze red-hot allure. At least, the actors portraying them do. Witness the new spy thriller Salt starring the luscious Angelina Jolie; it easily upholds (surpasses?) the sexy-spy tradition forged by countless others in these notable films.