Well, then I advertise the question:
"Is Samantha Morton the best actress of her generation?"
Sweet and Lowdown, Jesus' Son and Minority Report all feature great performances by her that have set the bar for acting by a female for today, in my humble *laughs* opinion.
Also, who could forget her in the pretentious music video for U2's "Electrical Storm" where she was able to act with the drummer, who pretended to be an actor and summed up the experience by saying, "She was yelling at me really loud." She just happened to be the only watchable thing for in that video.