Mamet is a very talented writer / director.
I’m not sure what his political or religious views are, but his stories are compelling and do not seem to bend reality to accommodate or placate liberal psychoses.
Mamet famously converted to conservatism a few years back.
http://www.villagevoice.com/news/david-mamet-why-i-am-no-longer-a-brain-dead-liberal-6429407
as far as i know he is still a follower of Los Angeles rabbi, Mordecai Finley, at Ohr haTorah, a very spiritual Jewish congregation.
http://www.jbooks.com/interviews/index/IP_Finley_Mamet.htm
a very interesting fellow, indeed