Actress and former political activist Jane Fonda, now 72, has created another exercise pro-gram, this time on DVD, aimed at people who are 50 and older. Fonda was a fitness guru to millions in the 1980s with her aerobic exercise videotapes and book. With the obesity problems that plague many Americans, is Fonda a role model in how to stay fit into the senior years? Or is she obsessed with fitness? Is there a middle ground for people who want to be healthy?