How many movies have Dinos Sampalis and Giannis Spiliopoulos collaborated on?

They have worked on 1 movie together! Their first movie together was Πανικός και παράνοια μέσα σε μια παραίσθηση (2007) and was their highest rated movie together. They have not worked together since Πανικός και παράνοια μέσα σε μια παραίσθηση (2007).