Samuel L. Jackson, 'Jungle Fever'

Samuel L. Jackson -- who plays S.H.I.E.L.D. head Nick Fury in 'The Avengers' -- has had his fair share of dark and twisted roles ('Pulp Fiction,' 'Black Snake Moan,' 'Unbreakable'). However, in 'Jungle Fever,' the actor portrays a crack addict willing to steal from family members to feed his habit.