Martha Plimpton (Stef) became a celebrated stage actress and activist, co-founding A Is For and serving on Planned Parenthood’s board. Joe Pantoliano (Francis Fratelli) turned villainy into gold, later winning an Emmy for The Sopranos and starring in The Matrix and Bad Boys.Robert Davi (Jake Fratelli) reinvented himself as a jazz singer—his Sinatra tribute album hit Billboard’s Jazz Top 10.Kerri...