What are the commonalities between Jewish and Buddhist thought?

I've pondered for a while on the possible links between Jewish and Buddhist thought. I have been on Buddhist retreat with people who identify as Jews. Also there is the Buddhist Jew phenomena as exemplified by Leonard Cohen. In addition some of my favorite authors appear to have Jewish background - Sharon Salzberg , Larry Rosenberg , Jack Kornfield etc... So leading on from this and also inspired by this answer - is it possible to summarise what Buddhist and Jewish thought have in common. I appreciate that this is a big topic but I wonder is it possible to put together the main 3 or 4 points that they might have in common and why there appears to be such a connection between Judaism and Buddhism.