From flute-blowing boy bore to lustful leading lady, Alyson Hannigan is making sexy strides toward superstardom. Since the definitive moment she uttered "Say my name, bitch!" to a shell-cocked Jason Biggs in American Pie (1999), Aly moved from band geek to bootilicious babe and never looked back. Alyson was spellbindingly saucy as the wispy witch "Willow" on Buffy the Vampire Slayer, giving a bon » More...