All My Children's Superstar Alumni

Before the lights go out on the ABC soap, see the A-listers – Amanda Seyfried! Josh Duhamel! Kelly Ripa! – who got their first big break on AMC

JESSE MCCARTNEY

Before making girls scream as a teen pop star, McCartney showed serious acting chops – and tears! – as tormented J.R. Chandler, a role he played from 1998 until 2001.