One of his best performances is in the Swiss movie “Vitus.” It came out in 2007 and is on DVD. Bruno Ganz is a favorite of mine, too.
Bruno Ganz has another outstanding, if smaller, role in another German film, “Der Baader Meinhof Komplex”. He plays the German police commissioner, Horst Herold, who brings down the first generation of the Rote Armee Fraktion (R.A.F). I recommend that film as well; in particular, the performances not only of Mr. Ganz but Moritz Bleibtreu as Andreas Baader, and an epic performance by Johana Wokalek as Gudrun Ensslin. A very good film.
I forgot about “Vitus”. Wonderful and the music is rhapsodic.