Based on two works by the playwright Jean Anouilh,You ain't seen nothin' yet opens with a who's-who of French acting royalty (including Mathieu Amalric, Michel Piccoli and frequent Resnais muse Sabine Azema) being summoned to the reading of a late playwright's last will and testament. There, the playwright (Denis Podalydes) appears on a TV screen from beyond the grave and asks his erstwhile collaborators to evaluate a recording of an experimental...