If there's a common thread to this week's top new independent and world films on DVD, it's the twisted ways of the heart: Alan Rudolph's "The Secret Lives of Dentists," starring Hope Davis and Campbell Scott, concerns infidelity and tooth pain, Catherine Hardwicke's "Thirteen" traces the reckless desires of teenages, and the hit documentary "Capturing the Friedmans" focuses on pornography and sexual abuse. Also: Kate Hudson in "Le Divorce" and the Seijun Suzuki yakuza thriller "Kanto Wanderer."