These are the films I loved that Adrien was in (in chronological order), not films I enjoyed because of him. I would most likely enjoy these anyway.
I will make another list for favorite characters/performances (because sometimes I enjoy him in movies I don't like as much). There will be some overlap, of course, but to me, it really needs to be answered differently. There are movies he was good in and there are good movies.
Features
King of the Hill - 1993
Restaurant - 1998
Liberty Heights - 1999
The Pianist - 2002
The Village - 2004
The Jacket - 2005
The Darjeeling Limited - 2007
The Brothers Bloom - 2008
Fantastic Mr. Fox - 2009 (he only has a cameo, anyway)