LOVE IS IN THE AIR - The onset of junior prom stirs up emotional tumult as Liz (Shiri Appleby) tempts fate by asking Max (Jason Behr) to be her date, Isabel (Katherine Heigl) decides Alex (Colin Hanks) is the man she's been searching for, and Michael (Brendan Fehr) tells Maria (Majandra Delfino) he won't take her to prom. Nick Wechsler, Emilie de Ravin and William Sadler also star. Lawrence Trilling directed the episode written by Jason Katims