'The Lives of Others'?

well, it happens sometimes actors and directors work together many times for many reasons: if they are the best artists one can find in the same country - if a director see a good interpretation of an actor and wants to work with him/her - if they are friends - if someone suggests an actor-friend to a director (often its a clause of the contract imposed by a famous powerful actor)...and so on...

for example:
Ulrich Muhe and Ulrich Tukur were together for the first of the three times in "Das letzte U-boot", there was also Sylvester Groth, who worked with Muhe also in "Mein Fuhrer" - Ulrich Tukur worked again with Costa-Gravas in "Le Couperet" - Sylvester Groth worked in "Stalingrad" with Jochen Nickel, who was also in "Elefantherz" with Daniel Bruhl + Manfred Zapatka who was in "Das letzte U-boot" - and I think thank to "Stalingrad" Jochen Nickel and Sebastian Rudolph had a little role in a movie with great Ralph Fiennes, respectively in "Schindler's List" and "The English Patient" (before, they worked together in "Manta") - Ulrich Tukur and Daniel Bruhl are working together in "John Rabe" - Sylvester Groth are working with August Diehl in "Die Buddenbrock" - August worked with Daniel in "Was nutz die Liebe..." - Martina Gedeck of "Das Leben der Anderen" worked with Sylvester in "Romeo" ...etcetera etcetera... the list can continue...I'm happy those between my favorite German actors worked together!

I must to confess to you: each time I have the curiosity to find out why one of my favorite actors is chosen to join the cast of a movie.

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ANGLOSASSI: gente che andava nuda a caccia di marmotte, quando noi già si accoltellava un Giulio Cesare!