Question: Which documentary did critic Roger Ebert call "one of the most powerful documentaries I've seen", 2006's Beyond the Call or 2000's Just, Melvin: Just Evil?
Sentence (from "Just, Melvin: Just Evil"): Just, Melvin: Just Evil is a 2000 American documentary by James Ronald Whitney about his grandfather, Melvin Just, and the devastating consequences of the sexual abuse Just inflicted on their family.
Relevant evidence: Yes