Air Berlin's safety cards depict this very intense guy, who looks like he can't wait to tackle an airjacker. Click on the image to better see his seriously intense face.
Berlin is well- known for street art.
I also got to visit the new Fab Lab in Berlin (only 3 months old!) It's called Open Design City and it's in the back of betahaus on Prinzessinnenstrassen.
I like their solution for collecting dust when using a drill.