The arrival of another gorgeous young woman with the initials of LL further complicates Clark Kent's (Tom Welling) life in the fourth season of Smallville, the WB's hip and sexy reinvention of the Superman legend. In this case, it's Lois Lane (Erica Durance), a would-be college freshman who's come to the Kansas heartland to investigate the disappearance of her cousin, Chloe. What she discovers instead is a naked, amnesiac Clark Kent in a cornfield, and things take off from there. Durance doesn't appear in every episode--she was credited as a "special guest star"--but her tough spirit and crackling wit provide a great, non-romantic foil to Clark.