As Courtney Love...
Allison Mack ("Smallville")WHY HER? Granted, Mack looks a little innocent to play a sobriety-challenged riot grrl. But as paranoid, motor-mouthed Chloe on ''Smallville,'' Mack seems just manic and off-kilter enough to be convincing as the former frontwoman of Hole. Of course, losing a hunky Kryptonian to another girl won't prepare her to play an unhinged widow, so she might need to summon up some acting superpowers.
