10 of the best - Isabelle Huppert in leading roles.
By release date.
The Time of the Wolf / Le Temps du loup (2003)
8 femmes (2002)
La Pianiste (2001)
Merci pour le chocolat (2000)
Les Destines sentimentales (2000)
Rien ne va plus (1997)
La Crmonie (1995)
La Sparation (1994)
Madame Bovary (1991)
And one to avoid - Ma mre (2004)
Bit of a squeeze, I know Ive seen others that could well be better than a couple of those listed but I cant remember which.
Also I know there is/was another thread relating to Isabelle Hupperts best performances but I couldnt locate it so my apologies for the separate thread.