The official title of the April, 2012 Wheaton Theology conference, was "Bonhoeffer, Christ, and Culture." Videos and mp3s of the presentations are available here.
A stunning Bonhoeffer quote I read years ago continues to challenge me:
“Nothing can be more cruel than the tenderness that consigns another to his sin. Nothing can be more compassionate than the severe rebuke that calls a brother back from the path of sin.” - from Life Together